1973
January January; 7 (1): 1 - 122	February February; 7 (2): 123 - 314	March March; 7 (3): 315 - 512
April April; 7 (4): 513 - 684	May May; 7 (5): 685 - 829	June June; 7 (6): 829 - 1011
July July; 8 (1): 1 - 131	August August; 8 (2): 133 - 300	September September; 8 (3): 301 - 495
October October; 8 (4): 497 - 684	November November; 8 (5): 685 - 850	December December; 8 (6): 851 - 1029