1970
January January; 30 (1): 1 - 152	February February; 30 (2): 153 - 272	March March; 30 (3): 273 - 407
April April; 30 (4): 411 - 546	May May; 30 (5): 565 - 689	June June; 30 (6): 707 - 799
July July; 31 (1): 1 - 118	August August; 31 (2): 119 - 234	September September; 31 (3): 239 - 341
October October; 31 (4): 347 - 460	November November; 31 (5): 461 - 606	December December; 31 (6): 607 - 712