Several numbering inaccuracies; the Jan. 2000 issue designated v. 18, no. 12, but constitutes v. 17, no. 12; issue for Feb. 2000 designated v. 14, no. 1, but constitutes v. 18, no 1; issues for Mar. 2000-Jan. 2001 designated v. 13, no. 2-no. 12, but constitute v. 18, no. 2-12