Columbia subject headings:
Harvard subject headings:
AIDS (Disease)--United States--Prevention
HIV infections--United States--Prevention.
Intravenous drug abusers--Sexual behavior--United States.
National AIDS Demonstration Research Project (U.S.)
National AIDS Demonstration Research Project (U.S.)--Data processing.
Princeton subject headings:
AIDS (Disease)--United States--Prevention.
Drug addicts--United States--Sexual behavior.
HIV infections--United States--Prevention.
National AIDS Demonstration Research Project (U.S.)--Data processing.