1970
January January; 5 (1): 1 - 98	February February; 5 (2): 99 - 274	March March; 5 (3): 275 - 412
April April; 5 (4): 413 - 540	May May; 5 (5): 541 - 661	June June; 5 (6): 663 - 822
July July; 6 (1): 1 - i3	August August; 6 (2): 149 - 257	September September; 6 (3): 259 - 380
October October; 6 (4): 381 - 572	November November; 6 (5): 573 - 705	December December; 6 (6): 707 - 880