1970
January January; 30 (1): 1 - 258	February February; 30 (2): 263 - 558	March March; 30 (3): 559 - 895
April April; 30 (4): 897 - 1213	May May; 30 (5): 1215 - 1548	June June; 30 (6): 1549 - 1911
July July; 30 (7): 1913 - 2080	August August; 30 (8): 2081 - 2284	September September; 30 (9): 2285 - 2449
October October; 30 (10): 2451 - 2612	November November; 30 (11): 2613 - 2819	December December; 30 (12): 2821 - 2963