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1971
January January; 220 (1): 1 - 298	February February; 220 (2): 253 - 582	March March; 220 (3): 583 - 846
April April; 220 (4): 847 - 1145	May May; 220 (5): 1147 - 1563	June June; 220 (6): 2067 - 2067
July July; 221 (1): 1 - 381	August August; 221 (2): 383 - 667	September September; 221 (3): 669 - 954
October October; 221 (4): 955 - 1216	November November; 221 (5): 1217 - 1544	December December; 221 (6): 1848 - 1848