1972
January January; 1 (1): 1 - 83	February February; 1 (2): 85 - 176	March March; 1 (3): 177 - 281
April April; 1 (4): 283 - 365	May May; 1 (5): 367 - 449	June June; 1 (6): 451 - 513.1
July July; 2 (1): 1 - 50	August August; 2 (2): 51 - 102	September September; 2 (3): 103 - 244
October October; 2 (4): 245 - 330	November November; 2 (5): 331 - 418	December December; 2 (6): 419 - 505