1977
January January; 15 (1): 1 - 342	February February; 15 (2): 343 - 678	March March; 15 (3): 679 - 1007
April April; 16 (1): 1 - 405	May May; 16 (2): 407 - 723	June June; 16 (3): 725 - 1029
July July; 17 (1): 1 - 237	August August; 17 (2): 239 - 473	September September; 17 (3): 475 - 667
October October; 18 (1): 1 - 260	November November; 18 (2): 261 - 562	December December; 18 (3): 563 - 872