1970 - 1979 Publications
Volume 50.1 - December 1970
Volume 50.2 - April 1971
Volume 50.3 - July 1971
Volume 51.1 - December 1971
Volume 51.2 - March 1972
Volume 51.3 - July 1972
Volume 52.1 - December 1972
Volume 52.2 - April 1973
Volume 52.3 - July 1973
Volume 53.1 - December 1973
Volume 53.2 - April 1974
Volume 53.3 - July 1974
Volume 54.1 - December 1974
Volume 54.2 - July 1975
Volume 55.1 - December 1975
Volume 55.2 - July 1976
Volume 56.1 - December 1976
Volume 56.2 - July 1977
Volume 57.1 - December 1977
Volume 57.2 - July 1978
Volume 58.1 - December 1978
Volume 58.2 - July 1979
