« llllllllul ~ ‘I‘ THE LABOR FORCE ,I ,' OF THE PHILADELPHIA - RADIO INDUSTRY 3 , IN 1936 , I i — GOVERNMENT PUBLICATlONE , DEPT. GCTTSIQTT { UNIVERSITY OF KENTUCKY : LlBRARlES C ’ ~ light ' I T WORKS PROGRESS ADMINISTRATION : ' NATIONAL RESEARCH PROJECT AND ; E INDUSTRIAL RESEARCH DEPARTMENT ‘7 i E UNIVERSITY OF PENNSYLVANIA ,