1977
January January; 70 (1): 1 - 55	February February; 70 (2): 67 - 144	March March; 70 (3): 145 - 214
April April; 70 (4): 221 - 292	May May; 70 (5): 297 - 372	June June; 70 (6): 373 - 443
July July; 70 (7): 453 - 510	August August; 70 (8): 515 - 585	September September; 70 (9): 597 - 657
October October; 70 (10): 675 - 742	November November; 70 (11): 753 - 828	December December; 70 (12): 831 - 898