01013cam a22002531  4500001001300000003000400013005001700017008004100034010001700075035002000092040002600112042001200138050002400150060001800174100004600192245016000238260011300398300002000511410010800531504003600639700003400675700003300709999001700742ss 45000017 DLC20260227112751.0820626s1945    xx            000 0 eng    ass 45000017   a(OCoLC)14732839  aDLCcDNLMdOCoLCdDLC  apremarc00aHD7123b.A35 no. 6100aW6bP3 v.57891 aFalk, I. S.q(Isidore Sydney),d1899-198410aDisability among gainfully occupied persons;ban introduction to disability insurance statisticsc[by] I. S. Falk, Barkev S. Sanders and David Federman ...  aWashington, D.C.,bFederal security agency, Social security board, Bureau of research and statistics,c1945.  aiv, 60 p.bill.10aUnited States.bSocial Security Board.bBureau of Research and Statistics.tBureau memorandum ;vno. 61  a"List of references": p. 58-60.1 aSanders, Barkev Sahak,d1903-1 aFederman, David,d1913-1944.  c90898d90898