Kooperativer Bibliotheksverbund

UID:

Format: XII, 380 p. 159 illus., 132 illus. in color. , online resource.

Edition: 1st ed. 2023.

ISBN: 9789811967559

Series Statement: Smart Innovation, Systems and Technologies, 321

Content: This book includes high-quality research papers presented at 21st International Conference on Informatics in Economy (IE 2022), which is held in Bucharest, Romania, during May 2022. This book covers research results in business informatics and related computer science topics, such as IoT, mobile-embedded and multimedia solutions, e-society, enterprise and business solutions, databases and big data, artificial intelligence, data mining and machine learning, quantitative economics.

Note: Micro-Services as Key Enabler of a Cloud-Native Architecture -- The Importance of Security and Safety in a Smart City -- Cyber Range Technology Stack Review -- IOT Security Challenges for Smart Homes -- An Overview of Security Issues in Smart Contracts on the Blockchain -- Agile Business Systems Development Paradigms - Technological and Human Resource Perspectives -- Identification of Qualitative Weak Signals Coming from Asset Management Working Practices to Feed Forward-Looking Investment Pensions Funds Models -- Digital Competences in the Public Sector - Challenges for Universities -- Transport System in Bucharest -- General Characteristics of the Assisted E-Learning System in Computer Science -- E-Learning in Romania: An Overview on Software Solutions from Private Initiatives.

In: Springer Nature eBook

Additional Edition: Printed edition: ISBN 9789811967542

Additional Edition: Printed edition: ISBN 9789811967566

Additional Edition: Printed edition: ISBN 9789811967573

Language: English

DOI: 10.1007/978-981-19-6755-9

URL: https://doi.org/10.1007/978-981-19-6755-9

URL: Volltext  (URL des Erstveröffentlichers)

UID:

Format: XVIII, 172 p. 47 illus., 37 illus. in color. , online resource.

Edition: 1st ed. 2022.

ISBN: 9783031099281

Series Statement: Intelligent Systems Reference Library, 227

Content: The book aims at presenting a multidisciplinary view meant to illustrate several significant efforts and results about the contribution of information technologies to make available new resources and enable rationally usage the existing ones in the context of the ever-growing trends to use ever more resources. Authors from various countries have been invited to contribute so that a rather broad and balanced image about the current trends and recent results obtained could result. The proposed book addresses methodologies and information technology-based tools and systems designed for the efficient use of diverse resources such as manpower and human knowledge, natural resources including water, raw materials and end of life products, financial assets, datasets, and even cultural goods. The book is organized in ten chapters. It is intended to be insightful for researchers, instructors, and planers from various domains. It can also be used as an auxiliary material for postgraduate studies in applied informatics, business administration, industrial engineering, engineering and management, computer, and digital humanities.

Note: Information and communications technology in the Con-text of Circular Economy -- Mathematical model of the financial sustainability of a public university -- Using Modern Information and Communication Technologies for Intelligent Capitalization of Cultural Resources.

In: Springer Nature eBook

Additional Edition: Printed edition: ISBN 9783031099274

Additional Edition: Printed edition: ISBN 9783031099298

Additional Edition: Printed edition: ISBN 9783031099304

Language: English

DOI: 10.1007/978-3-031-09928-1

URL: https://doi.org/10.1007/978-3-031-09928-1

URL: Volltext  (URL des Erstveröffentlichers)

UID:

Format: XII, 446 p. 184 illus., 147 illus. in color. , online resource.

Edition: 1st ed. 2023.

ISBN: 9783031166846

Series Statement: Advances in Intelligent Systems and Computing, 1435

Content: The book contains 37 papers presented at the ninth edition of the International Conference of Computers, Communications and Control-ICCCC-2022 held in Oradea and Băile Felix, Romania. A balanced selection of both methodological and application-oriented papers has been made to reflect several recent worldwide trends and results. The book is organized into five sections: a) integrated solutions in computer-based control, b) advanced control systems integrating computers and communications, c) soft computing including fuzzy system approach, d) decision making and support systems, and e) trustworthy and green design. The study of the papers contained in the book is useful for researchers, consultants, and postgraduate students in computer science and design, applied informatics, control systems, and industrial engineering. The book is also used as auxiliary material for student-level courses such as artificial intelligence, computational intelligence, and decision support systems.

Note: Automatic system based on Riesz MV-algebras, for predictive maintenance of bearings of industrial equipment using temperature sensors -- Smart contracts: A valuable technology in ERP e-commerce systems and for customer experience -- A nursing mobile robot for COVID19 patients using a RPI and mobile device -- Electric vehicles between recycling and sustainable development -- A new way of controlling traffic data inside a Smart City based on IoT devices and communication protocols designed for preserving perfect anonymity -- Research on the storage of integrated pipe corridor monitoring data based on blockchain technology -- Short-Term Covid-19 Incidence Prediction in Countries Using Clustering and Regression Analysis -- Importance of flexibility in design and organizational structure -- Green AI from Kirchhoff to Shannon.

In: Springer Nature eBook

Additional Edition: Printed edition: ISBN 9783031166839

Additional Edition: Printed edition: ISBN 9783031166853

Language: English

DOI: 10.1007/978-3-031-16684-6

URL: https://doi.org/10.1007/978-3-031-16684-6

URL: Volltext  (URL des Erstveröffentlichers)

UID:

Format: XI, 262 p. 77 illus., 73 illus. in color. , online resource.

Edition: 1st ed. 2024.

ISBN: 9783031559525

Series Statement: Intelligent Systems Reference Library, 253

Content: This book presents a multidisciplinary approach to digital transformation process of organizational transformation, offering support throughout the implementation process to all those interested. The digital transformation (DT) is a priority for many companies in the context of technological evolution. The use of appropriate tools, methodologies, methods, approaches, and techniques for DT, depending on the organizational characteristics, can contribute to a complete approach to organizational processes and to their efficiency. Digital transformation involves the adoption and use of new digital technologies to develop new products and services, modify existing ones and develop new business models to increase efficiency, productivity, and competitiveness. Starting from marketing to culture and education to health, automotive, engineering, mobility and human resources and others, it is addressed to professionals, practitioners, researchers, students, and other interested parties.

In: Springer Nature eBook

Additional Edition: Printed edition: ISBN 9783031559518

Additional Edition: Printed edition: ISBN 9783031559532

Additional Edition: Printed edition: ISBN 9783031559549

Language: English

DOI: 10.1007/978-3-031-55952-5

URL: https://doi.org/10.1007/978-3-031-55952-5

URL: Volltext  (URL des Erstveröffentlichers)

UID:

Format: XVI, 442 p. 121 illus., 105 illus. in color. , online resource.

Edition: 1st ed. 2024.

ISBN: 9789819965298

Series Statement: Smart Innovation, Systems and Technologies, 367

Content: This book includes high-quality research papers presented at 22nd International Conference on Informatics in Economy (IE 2023), which is held in Bucharest, Romania, during May 2023. This book covers research results in business informatics and related computer science topics, such as IoT, mobile-embedded and multimedia solutions, e-society, enterprise and business solutions, databases and big data, artificial intelligence, data mining and machine learning, quantitative economics.

Note: Personalized Big Data Access: Value for Medical Staff -- Investigating the European Union minimum wage setting mechanisms through the Directive (EU) 2022/2041 -- A Formal Intelligent Metric System for Measuring Cyber Security Maturity -- Modeling the impact of Natural Gas and Oil Price Crisis on Inflation -- Modeling Literary Preferences Using Complex Networks and Centrality Measures -- Impact of personalization on improving a chatbot's performance. Case study for a banking virtual assistant -- Analyzing the antecedents of fake news sharing in online social networks -- The Costs of Virtual Solutions for the Educational System -- Production and Transportation Model with Environmental Pollution Constraints -- Regional Development and the Role of Public Sector Digital Maturity -- Exploring the Relationship Between Income Inequality and Education: An Analysis Using PISA Test Results and the Gini Coefficient -- Educational Innovations Based on Metaverse in the Development of Smart Cities -- A Citation-based Scientometric Analysis of Published Articles from Bucharest University of Economic Studies -- Main Characteristics and Cyber Security Vulnerabilities of IoT Mobile Devices -- Attitudes towards digital transformation in economics education -- Personalized Big Data Access: Value for Medical Staff -- A Quantitative Approach to Default Probability Estimation using the ZPP Model: a Study for LUNA and FTT Virtual Currencies -- Leveraging Website Analytics to Enhance User Experience with Pop-ups and Drive Sales Conversions -- Application of Artificial Intelligence techniques in the detection of Financial Bubbles -- An Analytical Framework for Pervasive Games in The Cultural Sector: Expanding the Boundaries of Play in 8 Dimensions -- The Use of Blockchain Technology for Managing a Voting Process.

In: Springer Nature eBook

Additional Edition: Printed edition: ISBN 9789819965281

Additional Edition: Printed edition: ISBN 9789819965304

Additional Edition: Printed edition: ISBN 9789819969593

Language: English

DOI: 10.1007/978-981-99-6529-8

URL: https://doi.org/10.1007/978-981-99-6529-8

URL: Volltext  (URL des Erstveröffentlichers)

UID:

Format: XV, 233 p. 80 illus., 63 illus. in color. , online resource.

Edition: 1st ed. 2024.

ISBN: 9783031633379

Series Statement: Intelligent Systems Reference Library, 257

Content: The book offers aspects related to the health and process safety field, complex approaches to artificial intelligence, the role of accounting and auditing in the digital age, DT in agriculture, artificial intelligence in the maritime domain, education, management, sustainability and mobile technologies in learning. Digitization, digitalization and digital transformation (DT) are important for public organizations and private organizations. Despite their importance, these steps are approached differently in organizations. Public organizations emphasize the importance of digital transformation, while public organizations make efforts to align themselves with citizens' demands from a digitalization perspective. Incorporating technologies into organizational processes has become a priority for all industries to lead to important changes. All these activities are covered by the digital transformation that can lead to increased efficiency, agility, innovation and the unlocking of organizational values. Through this complex approach, the book contributes to the completion of knowledge in the field of digital transformation, develops and anticipates new research directions. It is addressed to professionals, practitioners, researchers, students and other interested parties.

Note: Digital transformation and smart work in the service of productivity -- The impact of Digital Transformation in Healthcare -- The impact of Digital Transformation in Healthcare.

In: Springer Nature eBook

Additional Edition: Printed edition: ISBN 9783031633362

Additional Edition: Printed edition: ISBN 9783031633386

Additional Edition: Printed edition: ISBN 9783031633393

Language: English

DOI: 10.1007/978-3-031-63337-9

URL: https://doi.org/10.1007/978-3-031-63337-9

URL: Volltext  (URL des Erstveröffentlichers)

UID:

Format: 1 Online-Ressource (VII, 314 p. 153 illus., 104 illus. in color)

Edition: 1st ed. 2021

ISBN: 9783030536510

Series Statement: Advances in Intelligent Systems and Computing 1243

Additional Edition: Erscheint auch als Druck-Ausgabe ISBN 978-3-030-53650-3

Additional Edition: Erscheint auch als Druck-Ausgabe ISBN 978-3-030-53652-7

Language: English

DOI: 10.1007/978-3-030-53651-0

URL: Volltext  (URL des Erstveröffentlichers)

URL: Buchcover

UID:

Format: 1 Online-Ressource (xvi, 216 Seiten) , Illustrationen

ISBN: 9783319472218

Series Statement: Automation, collaboration, & e-services 4

Additional Edition: Erscheint auch als Druckausgabe ISBN 978-3-319-47219-5

Language: English

DOI: 10.1007/978-3-319-47221-8

URL: Volltext  (URL des Erstveröffentlichers)

UID:

Format: 1 Online-Ressource (xii, 380 Seiten)

ISBN: 9789811967559

Series Statement: Smart innovation, systems and technologies v.321

Content: Intro -- Preface -- Contents -- About the Editors -- Part I Cloud, Distributed and Parallel Computing, IoT, Mobile-Embedded and Multimedia Solutions -- 1 Microservices as a Key Enabler of a Cloud Native Architecture -- 1.1 Preamble -- 1.2 The Concept -- 1.3 Principles -- 1.4 Reasons for Adopting Microservices -- 1.5 Why Now is Time for Adoption -- 1.6 Challenges and Limitations -- 1.7 SOA Versus Microservices -- 1.8 Use Cases and Conclusion -- References -- 2 The Importance of Security and Safety in a Smart City -- 2.1 Introduction -- 2.2 The Evolution of Smart Cities -- 2.3 How Smart City Helps the Citizens -- 2.4 Security and Safety in a Smart City -- 2.5 What Follows in the Future in a Smart City -- 2.6 Conclusions -- References -- 3 Cyber Range Technology Stack Review -- 3.1 Introduction -- 3.2 Cyber Range Systems Architecture -- 3.2.1 Architecture Levels and Technologies -- 3.2.2 Orchestration Versus Configuration Management -- 3.3 Cyber Range Scenario -- 3.3.1 Generic Scenario Overview -- 3.3.2 Scenario Infrastructure Deployment-Terraform and Ansible -- 3.4 Scenario Deployment-Practical Analysis -- 3.4.1 Scenario Description -- 3.4.2 Results and Remarks -- 3.5 Conclusions and Future Work -- References -- 4 IoT Security Challenges for Smart Homes -- 4.1 Introduction -- 4.2 Literature Review -- 4.3 IoT Devices for Smart Homes -- 4.4 IoT and Smart Home Vulnerabilities and Counter-Measures -- 4.5 Conclusion and Future Work -- References -- 5 An Overview of Security Issues in Smart Contracts on the Blockchain -- 5.1 Introduction -- 5.2 Ethereum Architecture -- 5.3 Security Considerations -- 5.4 Developing Smart Contracts -- 5.4.1 Attack Surface -- 5.4.2 Upgradability -- 5.4.3 Error Handling -- 5.4.4 Transaction Cost -- 5.5 Smart Contracts Patterns -- 5.5.1 Check-Effects-Interaction Pattern -- 5.5.2 Pull Over Push -- 5.5.3 Access Restriction.

Note: Description based on publisher supplied metadata and other sources

Additional Edition: ISBN 9789811967542

Additional Edition: Erscheint auch als Druck-Ausgabe ISBN 9789811967542

Language: English

Keywords: Konferenzschrift

URL: lizenzpflichtig

UID:

Format: 1 online resource (439 pages)

Edition: First edition.

ISBN: 981-9965-29-2

Series Statement: Smart Innovation, Systems and Technologies Series ; Volume 367

Note: Intro -- Organization -- Preface -- Contents -- About the Editors -- Part I Big Data Management, Processing and Analytics, IT Deployment in Cultural Institutions and Smart Cities and Sustainable Communities -- 1 Personalized Big Data Access: Value for Medical Staff -- 1.1 Background -- 1.1.1 The Challenges of Accessing Big Data in a Health Organization -- 1.1.2 Enterprise Architecture -- 1.2 Research Method -- 1.2.1 Research Model -- 1.2.2 Case Studies -- 1.3 Conclusions -- References -- 2 Multiple Behavior Patterns in Ad-Related Web Traffic of Humans and Bots -- 2.1 Introduction -- 2.1.1 How Many Categories? -- 2.1.2 The Case Studied: Web Traffic Related to Advertising Content -- 2.2 The Course of the Study -- 2.3 Application of Clustering -- 2.3.1 The Initial Attempts -- 2.3.2 Some Further Clustering Experiments -- 2.3.3 The Successful Series of Experiments -- 2.4 Conclusions and Questions to Be Answered -- References -- 3 Impact of Electronic Cash Registers on Tax Collection -- 3.1 Introduction -- 3.1.1 Data Lifecycle in an EFD System -- 3.2 Literature Review -- 3.2.1 Implementation of EFD Systems -- 3.3 Case Study: Romania -- 3.4 Conclusions -- References -- 4 Monitoring and Optimizing the Database Performance -- 4.1 Introduction -- 4.2 Database Monitoring -- 4.3 Comparison Between Two Databases -- 4.4 Conclusion -- References -- 5 Exploring the Relationship Between Income Inequality and Education: An Analysis Using PISA Test Results and the Gini Coefficient -- 5.1 Introduction -- 5.2 Data and Methods -- 5.2.1 Data Preparation -- 5.2.2 K-means Clustering Algorithm -- 5.3 Countries Clusterization by PISA and Gini -- 5.4 Conclusion -- References -- 6 Leveraging Website Analytics to Enhance User Experience with Pop-Ups and Drive Sales Conversions -- 6.1 Introduction -- 6.2 The Importance of Web and Customer Behavior Analytics. , 6.2.1 A Role in Improving Customer Satisfaction -- 6.2.2 Increasing Conversion Rates -- 6.2.3 Enhancing Overall Business Performance -- 6.3 The Importance of Pop-ups, Their Display Time, and Its Determining Factors -- 6.4 Methodology -- 6.5 Results -- 6.6 Discussion -- 6.7 Conclusion -- References -- 7 An Analytical Framework for Pervasive Games in the Cultural Sector: Expanding the Boundaries of Play in 8 Dimensions -- 7.1 Introduction -- 7.2 Pervasive Games in the Cultural Sector -- 7.3 Analytical Tools for Games, Why They Are (Still) Needed -- 7.4 Analytical Framework for PGs in the Cultural Sector -- 7.4.1 Analysing PGs in the Cultural Sector -- 7.4.2 Building the Framework -- 7.5 Conclusions, Perspectives, and Further Work -- References -- 8 Educational Innovations Based on Metaverse in the Development of Smart Cities -- 8.1 About Metaverse -- 8.2 Metaverse in the Educational Area -- 8.3 Smart Cities and the Metaverse -- 8.4 Coherence of Metaverse to Education and Smart Cities -- 8.5 Conclusions -- References -- 9 The Costs of Virtual Solutions for the Educational System -- 9.1 Introduction -- 9.2 Virtual Reading Room and Virtual Teaching Spaces Development Steps and Costs -- 9.3 Virtual Solutions Success Measurement -- 9.4 Virtual Solutions Efficiency -- 9.5 Conclusions -- References -- Part II Digital Business and e-Transformation -- 10 The Use of Blockchain Technology for Managing a Voting Process -- 10.1 Introduction -- 10.2 Blockchain and Voting Systems -- 10.2.1 Blockchain -- 10.2.2 The Need of Voting Applications -- 10.2.3 Existing Voting Applications Versus VV Application -- 10.3 Implementing the VV (Virtual Vote) Application -- 10.3.1 The Overview of VV Application -- 10.3.2 The Architecture of VV Application -- 10.3.3 Ensuring the Security of the Application -- 10.4 Discussion and Conclusions -- References. , 11 Exploring the Relationship Between AI Adoption and the Integration of Digital Technology in Enterprises -- 11.1 Introduction -- 11.2 Methodology -- 11.3 Artificial Intelligence Evolution -- 11.4 General Aspects Regarding the Use of AI in the Business Environment -- 11.5 Results and Discussion -- 11.6 Analysis-Based Recommendations -- 11.7 Conclusions, Limitations and Future Research Directions -- References -- 12 Models for Determining the Reached Level of Digitalization -- 12.1 Introduction -- 12.2 The Open Data Institute Model -- 12.3 The Open ROADS Model -- 12.4 Guidelines in Digitalization a New Business Solution -- 12.5 Conclusion -- References -- 13 Analyzing the Antecedents of Fake News Sharing in Online Social Networks -- 13.1 Introduction -- 13.2 Theoretical Background and Hypothesis Development -- 13.3 Research Methodology, Results, and Discussion -- 13.3.1 Survey Instrument and Data Collection -- 13.3.2 Data Analysis -- 13.3.3 Discussion, Limitations, and Future Research -- 13.4 Conclusions and Implications -- References -- 14 Considerations About the Regulatory Framework of Cryptocurrency -- 14.1 Introduction -- 14.2 Blockchain the Basis for Cryptocurrency -- 14.3 Cryptocurrency International Regulatory Framework -- 14.4 Conclusions -- References -- 15 Attitudes Toward Digital Transformation in Economics Education -- 15.1 Introduction -- 15.2 Literature Review -- 15.3 Research Methodology -- 15.4 Empirical Study of the Attitudes -- 15.5 Hypotheses -- 15.6 Discussion -- 15.7 Conclusion -- References -- 16 Regional Development and the Role of Public Sector Digital Maturity -- 16.1 Introduction -- 16.2 Digital Transformation-Literature Review -- 16.3 Methodology -- 16.4 Results and Discussion -- 16.5 Conclusion -- References. , 17 Enhancing the Financial Sector with Quantum Computing: A Comprehensive Review of Current and Future Applications -- 17.1 Introduction -- 17.2 Fundamentals of Quantum Computing -- 17.3 Research Methodology -- 17.4 Findings and Discussions -- 17.4.1 Current Applications and Research on Quantum Computing in the Financial Sector -- 17.4.2 SWOT Analysis of Implementing Quantum Computing in Finance -- 17.5 Conclusions -- References -- Part III IoT, Mobile and Multimedia Solutions, Cybersecurity and Critical Infrastructures, Machine Learning Theory and Applications -- 18 An Application of the Flexible Best-Worst Method to Weighting Internet of Things Security Requirements -- 18.1 Introduction -- 18.2 Best-Worst Method and Flexible Best-Worst Method -- 18.2.1 Flexible Best-Worst Method (F-BWM) -- 18.2.2 The F-BWM Algorithm -- 18.3 The IoT Security Requirements for Criteria Selection -- 18.4 An Application of F-BWM for Weighting IoT Security Requirements -- 18.5 Conclusions -- References -- 19 Main Characteristics and Cybersecurity Vulnerabilities of IoT Mobile Devices -- 19.1 Introduction -- 19.1.1 IoT Usability -- 19.1.2 IoT Architecture -- 19.1.3 Principle Elements of IoT -- 19.2 IoT Fundamentals and Characteristics -- 19.2.1 IoT Fundamentals -- 19.2.2 IoT Characteristics -- 19.3 General and Mobile IoT Device Vulnerabilities -- 19.3.1 Weak Authentication and Weak Passwords -- 19.3.2 Lack of Encryption -- 19.3.3 Outdated Software -- 19.3.4 Phishing Attacks -- 19.3.5 Malware -- 19.3.6 Maximizing the Usability of IoT Mobile Devices: Overcoming Security Vulnerabilities for Enhanced Functionality -- 19.4 Conclusion -- References -- 20 An Analysis About Smartphone Usage and Security in Europe: Trends and Insights -- 20.1 Introduction -- 20.2 Methodology -- 20.3 Results and Discussion -- 20.4 Conclusion -- References. , 21 A Formal Intelligent Metric System for Measuring Cyber Security Maturity -- 21.1 Introduction -- 21.2 Formal Intelligent Metric System -- 21.3 Potential Use of the Formal Intelligent Metric System -- 21.4 Conclusions -- References -- 22 Impact of Personalization on Improving a Chatbot's Performance. Case Study for a Banking Virtual Assistant -- 22.1 Introduction -- 22.2 Literature Review -- 22.3 Research Methodology -- 22.4 Results and Discussion -- 22.5 Conclusions -- References -- 23 A Citation-Based Scientometric Analysis of Published Articles from Bucharest University of Economic Studies -- 23.1 Scientometric Rankings and Trends of the Bucharest University of Economic Studies Provided by Specialized Organizations -- 23.2 Univariate and Multivariate Analysis of Scientometric Data -- 23.3 Conclusion -- References -- 24 Ship Detection Using SAR-An Integration of Geographic Systems -- 24.1 Introduction -- 24.2 Methodology -- 24.2.1 ArcGIS Pro -- 24.2.2 Creodias -- 24.2.3 Amazon Sentinel-1 Bucket -- 24.2.4 SNAP Desktop -- 24.2.5 Image Processing Using SNAP -- 24.2.6 Adaptive Thresholding Using Snap -- 24.3 Results -- 24.4 Discussions -- 24.5 Conclusions -- References -- 25 Develop a Machine Learning Life Cycle in Oracle Accelerated Data Science (ADS) SDK -- 25.1 Introduction -- 25.2 Oracle Cloud Infrastructure (OCI) Account -- 25.3 What is the Oracle Accelerated Data Science (ADS) SDK? -- 25.4 Setup of the Environment -- 25.4.1 Install Stack -- 25.4.2 Create Project -- 25.5 Research Methodology -- 25.5.1 Finding the Dataset: Dataset Description -- 25.5.2 Upload Data -- 25.5.3 Explore Data -- 25.5.4 Automated Transformation and Visualization -- 25.5.5 Build a Regressor with AutoML Pipeline -- 25.5.6 Results -- 25.5.7 Comparison Between Oracle ADS SDK and Microsoft Automated ML -- 25.5.8 Working Files -- 25.6 Conclusions -- References. , 26 Improving Programming Activities Using ChatGPT: A Practical Approach.

Additional Edition: Print version: Ciurea, Cristian Proceedings of 22nd International Conference on Informatics in Economy (IE 2023) Singapore : Springer Singapore Pte. Limited,c2023 ISBN 9789819965281

Language: English