Archive of 1999 Online Issues
- January; 151 (1): 9 - 420
- February; 151 (2): 421 - 915
- March; 151 (3): 917 - 1231
- April; 151 (4): 1233 - 1635
- May; 152 (1): 1 - 476
- June; 152 (2): 477 - 820
- July; 152 (3): 821 - 1241
- August; 152 (4): 1245 - 1769
- September; 153 (1): 1 - 513
- October; 153 (2): 515 - 1069
- November; 153 (3): 1071 - 1491
- December; 153 (4): 1493 - 2031