Archive of 1990 Online Issues:

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January
January; 72 (1): 1 - 158
February
February; 72 (2): 159 - 318
March
March; 72 (3): 319 - 478
April
April; 72 (4): 479 - 638
June
June; 72 (5): 639 - 798
July
July; 72 (6): 799 - 958
August
August; 72 (7): 959 - 1118
September
September; 72 (8): 1119 - 1278
October
October; 72 (9): 1279 - 1438
December
December; 72 (10): 1439 - 1580