1973
January January; 66 (1): 1 - 130	February February; 66 (2): 131 - 211	March March; 66 (3): 217 - 294
April April; 66 (4): 303 - 403	May May; 66 (5): 411 - 486	June June; 66 (6): 501 - 599
July July; 66 (7): 607 - 722	August August; 66 (8): 729 - 834	September September; 66 (9): 841 - 951
October October; 66 (10): 959 - 1061	November November; 66 (11): 1067 - 1142	December December; 66 (12): 1151 - 1243