1989
January January; 13 (1): 3 - 90	February February; 13 (2): 91 - 192	March March; 13 (3): 193 - 282
April April; 13 (4): 295 - 400	May May; 13 (5): 401 - 497	June June; 13 (6): 539 - 972
July July; 14 (1): 1 - 115	August August; 14 (2): 117 - 226	September September; 14 (3): 227 - 358
October October; 14 (4): 367 - 459	November November; 14 (5): 461 - 577	December December; 14 (6): 579 - 679