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1999 January 1, 1999   Vol. 13, Num. 1    January 15, 1999   Vol. 13, Num. 2    February 1, 1999   Vol. 13, Num. 3    February 15, 1999   Vol. 13, Num. 4      March 1, 1999   Vol. 13, Num. 5    March 15, 1999   Vol. 13, Num. 6    April 1, 1999   Vol. 13, Num. 7    April 15, 1999   Vol. 13, Num. 8      May 1, 1999   Vol. 13, Num. 9    May 15, 1999   Vol. 13, Num. 10    June 1, 1999   Vol. 13, Num. 11    June 15, 1999   Vol. 13, Num. 12      July 1, 1999   Vol. 13, Num. 13    July 15, 1999   Vol. 13, Num. 14    August 1, 1999   Vol. 13, Num. 15    August 15, 1999   Vol. 13, Num. 16      September 1, 1999   Vol. 13, Num. 17    September 15, 1999   Vol. 13, Num. 18    October 1, 1999   Vol. 13, Num. 19    October 15, 1999   Vol. 13, Num. 20      November 1, 1999   Vol. 13, Num. 21    November 15, 1999   Vol. 13, Num. 22    December 1, 1999   Vol. 13, Num. 23    December 15, 1999   Vol. 13, Num. 24