1989
January January; 68 (1): 1 - 76	February February; 68 (2S): S1 - S339	March March; 68 (3): 191 - 430
April April; 68 (4): 431 - 550	May May; 68 (5): 551 - 706	June June; 68 (6): 707 - 866
July July; 69 (1): 1 - 147	August August; 69 (2): 149 - 272	September September; 69 (3): 273 - 428
October October; 69 (4): 429 - 553	November November; 69 (5): 555 - 696	December December; 69 (6): 697 - 879