1. HIV/AIDS Surveillance: U.S. AIDS Cases Reported Through December 1990;Center for Disease Control,1991
2. HIV/AIDS Surveillance: U.S. AIDS Cases Reported Through December 1991;Center for Disease Control,1992
3. AIDS in New York State Through 1998;New York State Department of Health,1989
4. Evidence of spread of HIV in low prevalence areas of the United States;Gardner;J. Acq. Immunodef. Synd.,1989
5. Aids and the Social Sciences: Common Threads;Ulack,1991