1972
January January; 18 (1): 1 - 40	February February; 18 (2): 40 - 80	March March; 18 (3): 81 - 120
April April; 18 (4): 121 - 160	May May; 18 (5): 1 - 194	June June; 18 (6): 197 - 231
July July; 19 (1): 1 - 36	August August; 19 (2): 13 - v	September September; 19 (3): 21 - 108
October October; 19 (4): 29 - 144	November November; 19 (5): 5 - 171	December December; 19 (6): 33 - 205