1973
January January; 113 (1): 1 - 528	February February; 113 (2): 529 - 1088.2	March March; 113 (3): 1091 - 1515
April April; 114 (1): 1 - 462	May May; 114 (2): 463 - 896	June June; 114 (3): 897 - 1366.1
July July; 115 (1): 1 - 467	August August; 115 (2): 469 - 714	September September; 115 (3): 717 - 1223
October October; 116 (1): 1 - 510	November November; 116 (2): 511 - 1089	December December; 116 (3): 1091 - 1482