1973
January January 1973; 2 (1): 2 - 20	February February 1973; 2 (2): 2 - 24	March March 1973; 2 (3): 2 - 24
April April 1973; 2 (4): 1 - 21	May May 1973; 2 (5): 3 - 25	June June 1973; 2 (6): 2 - 21
July July 1973; 2 (7): 1 - 25	August August 1973; 2 (8): 2 - 25	September September 1973; 2 (9): 3 - 24
October October 1973; 2 (10): 3 - 24	November November 1973; 2 (11): 1 - 24	December December 1973; 2 (12): 1 - 19