1973
January January; 36 (1): 1 - 206	February February; 36 (2): 207 - 407	March March; 36 (3): 415 - 624
April April; 36 (4): 627 - 798	May May; 36 (5): 801 - 1042	June June; 36 (6): 1043 - 1270
July July; 37 (1): 1 - 174	August August; 37 (2): 177 - 344	September September; 37 (3): 351 - 494
October October; 37 (4): 499 - 638	November November; 37 (5): 641 - 840	December December; 37 (6): 841 - 993