1971
January January; 88 (1): 1 - 278	February February; 88 (2): 279 - 531	March March; 88 (3): 537 - 789
April April; 88 (4): 797 - 1106	May May; 88 (5): 1109 - 1279	June June; 88 (6): 1281 - 1531
July July; 89 (1): 1 - 318	August August; 89 (2): 331 - 628	September September; 89 (3): 631 - 942
October October; 89 (4): 943 - 1128	November November; 89 (5): 1131 - 1330	December December; 89 (6): 1331 - 1556