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1971
January January; 30 (1): 1 - 163	February February; 30 (2): 165 - 199	March March; 30 (3): 305 - 442
April April; 30 (4): 443 - 596	May May; 30 (5): 597 - 791	June June; 30 (6): 793 - 922
July July; 31 (1): 1 - 173	August August; 31 (2): 175 - 321	September September; 31 (3): 323 - 506
October October; 31 (4): 507 - 645	November November; 31 (5): 647 - 800	December December; 31 (6): 801 - 966