Journal/Serial
No. 1 (January 1950) ; Vol. 1, no. 2 (April 1950)-vol. 12, no. 88 (October 1971) ; New series, volume 1, no. 89 (Spring 1974)-N.S., volume 15, nos. 207/208 (Autumn/Winter 2004) ; Third series, volume 1, part 1 (Spring 2005)=no. 209-third series, volume 8, part 1/2 (Autumn 2017)=nos. 233/234 ; Fourth series, volume 1 (2018)=number 235-