Bibliography
Bulletin no.1 August 1966
Bulletin no.2 March 1967
Bulletin no.3 August 1967
Bulletin no.4 June 1968
Bulletin no.5 April 1969
Bulletin no.6 July 1969
Bulletin no.7 Autumn 1969
Bulletin no.8 September 1970
Bulletin no.9 January 1971
Bulletin no.10 August 1971
Bulletin no.11 December 1972
Bulletin no.12 September 1973
Bulletin no.13 December 1974
Bulletin no.14 March 1975
Bulletin no.15 August 1975
Bulletin no.16 January 1976
Bulletin no.17 May 1976
Bulletin no.18 September 1976
Bulletin no.19 Autumn 1977
Bulletin no.20 April 1980
Bulletin no.21 May 1980
Bulletin no.22 May 1982
Bulletin no.23 June 1982
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