00000cam a22000004a 4500 UP-99796217601148645 Buklod 20230503092542.0 m |o d | ta 080209s1961 ohua r |000 u|eng d (iLib)UPD-00000039569 DML eng HV 29 H63 Hoffer, Joe Ralph 1907- Information retrieval in social welfare experiences with an edge-notched information retrieval system Joe Ralph Hoffer. Columbus, Ohio National Conference on Social Welfare [1961] 14 p. ill. Information storage and retrieval systems Social service. Book FO Monograph UPD DSWCD HV 29 H63 Book