1989
January January 1989; 68 (1): 2 - 78	February February 1989; 68 (2): 82 - 159	March March 1989; 68 (3): 442 - 519
April April 1989; 68 (4): 522 - 746	May May 1989; 68 (5): 750 - 843	June June 1989; 68 (6): 1058 - 1135
July July 1989; 68 (7): 1138 - 1216	August August 1989; 68 (8): 1218 - 1295	September September 1989; 68 (9): 1298 - 1375
October October 1989; 68 (10): 1377 - 1470	November November 1989; 68 (11): 1474 - 1550	December December 1989; 68 (12): 1732 - 1796