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1971
January January; 176 (1): 1 - 259	February February; 176 (2): 261 - 496	March March; 176 (3): 497 - 778
April April; 177 (1): 1 - 315	May May; 177 (2): 317 - 473	June June; 177 (3): 475 - 661
July July; 178 (1): 1 - 252	August August; 178 (2): 253 - 416	September September; 178 (3): 417 - 647
October October; 179 (1): 1 - 148	November November; 179 (2): 149 - 454	December December; 179 (3): 455 - 670