RT Book T1 Membership and participation in formal voluntary associations by urban male homosexuals A1 Salsberg, Sheldon LA English PP Ann Arbor, Mich. PB Univ. Microfilms YR 1974 UL https://krimdok.uni-tuebingen.de/Record/1121914071 K1 Hochschulschrift K1 USA : Homosexuellenbewegung