1997
January January; 50 (1): 1 - 108	February February; 50 (2): 109 - 228	March March; 50 (3): 229 - 314
April April; 50 (4): 315 - 496	May May; 50 (5): 487 - 624	June June; 50 (6): 625 - 755
July July; 50 (7): 757 - 878	August August; 50 (8): 879 - 1052	September September; 50 (9): 1053 - 1203
October October; 50 (10): 1211 - 1328	November November; 50 (11): 1329 - 1460	December December; 50 (12): 1461 - 1586