1989
January January; 33 (1): 1 - 130	February February; 33 (2): 131 - 257	March March; 33 (3): 259 - 405
April April; 33 (4): 407 - 596	May May; 33 (5): 597 - 790	June June; 33 (6): 791 - 989
July July; 33 (7): 991 - 1129	August August; 33 (8): 1131 - 1411	September September; 33 (9): 1413 - 1653
October October; 33 (10): 1655 - i6	November November; 33 (11): 1829 - 2025	December December; 33 (12): 2027 - 2164