1971
January January; 61 (1): 1 - 27	February February; 61 (2): 37 - 64	March March; 61 (3): 75 - 115
April April; 61 (4): 125 - 145	May May; 61 (5): 161 - 193	June June; 61 (6): 203 - 228
July July; 61 (7): 241 - 278	August August; 61 (8): 287 - 313	September September; 61 (9): 327 - 355
October October; 61 (10): 369 - 400	November November; 61 (11): 409 - 436	December December; 61 (12): 445 - 486