Archive of 1999 Online Issues:

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January
January; 81 (1): 1 - 148
February
February; 81 (2): 151 - 300
March
March; 81 (3): 303 - 444
April
April; 81 (4): 447 - 596
May
May; 81 (5): 599 - 748
June
June; 81 (6): 751 - 900
July
July; 81 (7): 903 - 1050
August
August; 81 (8): 1053 - 1202
September
September; 81 (9): 1205 - 1353
October
October; 81 (10): 1357 - 1506
November
November; 81 (11): 1509 - 1658
December
December; 81 (12): 1661 - 1793