1972
January January; 5 (1): 1 - 150	February February; 5 (2): 151 - 268	March March; 5 (3): 269 - 417
April April; 5 (4): 419 - 635	May May; 5 (5): 637 - 834	June June; 5 (6): 835 - 989
July July; 6 (1): 1 - 99	August August; 6 (2): 101 - 209	September September; 6 (3): 211 - 426
October October; 6 (4): 427 - 650	November November; 6 (5): 651 - 892	December December; 6 (6): 893 - 1034