1971
January January; 21 (1): 1 - 163	February February; 21 (2): 165 - 384.1	March March; 21 (3): 387 - 404.1
April April; 21 (4): 565 - 785.1	May May; 21 (5): 787 - 970.1	June June; 21 (6): 973 - 1111
July July; 22 (1): 1 - 146.1	August August; 22 (2): 147 - 253	September September; 22 (3): 255 - 485
October October; 22 (4): 487 - 740	November November; 22 (5): 741 - 948	December December; 22 (6): 949 - 1175