1989
January January; 68 (1): 3 - 234	February February; 68 (2): 239 - 508	March March; 68 (3): 511 - 697
April April; 68 (4): 701 - 860	May May; 68 (5): 863 - 999	June June; 68 (6): 1007 - 1219
July July; 69 (1): 1 - 217	August August; 69 (2): 221 - 477	September September; 69 (3): 491 - 691
October October; 69 (4): 697 - 919	November November; 69 (5): 925 - 1089	December December; 69 (6): 1093 - 1311