UID:
edocfu_9961081667802883
Format:
1 online resource (2 volumes) :
,
illustrations, maps.
Series Statement:
Bulletin / United States Department of the Interior, Geological Survey ; 930
Note:
At head of title: United States Department of the Interior, Geological Survey.
,
Title from title screen (viewed Dec. 9, 2015).
,
Issued in two volumes, each volume has two parts.
,
vol. 1, pt. 1. Southern Illinois -- vol. 1, pt. 2. West-central Illinois -- vol. 2, pt. 3. East-central Illinois -- vol. 2, pt. 4. Northern Illinois.
Language:
English