Joint hearing on quality and limitations of the S-night homeless count : joint hearing before the Subcommittee on Government Information and Regulation of the Committee on Governmental Affairs, United States Senate, and the Subcommittee on Census and Population of the Committee on Post Office and Civil Service, House of Representatives, One Hundred Second Congress, first session, May 9, 1991. (U.S. G.P.O. :, 1991)