Ruttenberg, Stanley H. Manpower Challenge of the 1970s : Institutions and social change / Stanley H. Ruttenberg . - London. The johns hopkins 1970. - viii, 126 p.: ill,; 22cm includes bibliography . ISBN: 801811414 Subjects--Topical Terms: Institutions and social change. Dewey Class. No.: 331.1. / RUM 1970.