1980
January January 1980; 9 (1): 6 - 31	February February 1980; 9 (2): 5 - 26	March March 1980; 9 (3): 4 - 35
April April 1980; 9 (4): 4 - 31	May May 1980; 9 (5): 4 - C-8	June June 1980; 9 (6): 5 - 31
July July 1980; 9 (7): 4 - 35	September September 1980; 9 (8): 5 - 33	October October 1980; 9 (9): 4 - 27
November November 1980; 9 (10): 3 - 27	December December 1980; 9 (11): 4 - 28