1973
January January; 92 (1): 1 - 344	February February; 92 (2): 349 - 649	March March; 92 (3): 657 - 963
April April; 92 (4): 965 - 1300	May May; 92 (5): 1301 - 1574	June June; 92 (6): 1575 - 1798
July July; 93 (1): 1 - 271	August August; 93 (2): 273 - 512	September September; 93 (3): 517 - 758
October October; 93 (4): 761 - 997	November November; 93 (5): 1001 - 1240	December December; 93 (6): 1241 - 1455