1999
January January; 59 (1): 1 - 256 January; 59 (2): 269 - 498	February February; 59 (3): 507 - 765 February; 59 (4): 771 - 981	March March; 59 (5): 987 - 1167 March; 59 (6): 1169 - 1389
April April; 59 (7): 1391 - 1664 Supplement: 1672s - 1808s April; 59 (8): 1811 - 2021	May May; 59 (9): 2023 - 2256 May; 59 (10): 2259 - 2504	June June; 59 (11): 2511 - 2753 June; 59 (12): 2759 - 3019
July July; 59 (13): 3021 - 3271 July; 59 (14): 3299 - 3534	August August; 59 (15): 3539 - 3853 August; 59 (16): 3855 - 4158	September September; 59 (17): 4161 - 4476 September; 59 (18): 4493 - 4741
October October; 59 (19): 4743 - 5053 October; 59 (20): 5059 - 5400	November November; 59 (21): 5403 - 5628 November; 59 (22): 5647 - 5860	December December; 59 (23): 5863 - 6022 December; 59 (24): 6027 - 6283