1970
January January; 86 (1): 1 - 179	February February; 86 (2): 183 - 449	March March; 86 (3): 451 - 710
April April; 86 (4): 711 - 941	May May; 86 (5): 949 - 1186	June June; 86 (6): 1205 - 1471
July July; 87 (1): 1 - 208	August August; 87 (2): 217 - 448	September September; 87 (3): 453 - 636
October October; 87 (4): 641 - 825	November November; 87 (5): 827 - 1104	December December; 87 (6): 1109 - 1394