1989
January January; 55 (1): 1 - 209	February February; 55 (2): 213 - 387 February; 55 (2 Pt 2): 1 - 606	March March; 55 (3): 393 - 591
April April; 55 (4): 595 - 809	May May; 55 (5): 817 - 1021	June June; 55 (6): 1025 - 1278
July July; 56 (1): 1 - 225	August August; 56 (2): 229 - 433	September September; 56 (3): 437 - 636
October October; 56 (4): 641 - 806	November November; 56 (5): 809 - 1051	December December; 56 (6): 1053 - 1272