01013cam a22002531 4500 ss 45000017 DLC 20260227112751.0 820626s1945 xx 000 0 eng ss 45000017 (OCoLC)14732839 DLC DNLM OCoLC DLC premarc HD7123 .A35 no. 61 W6 P3 v.5789 Falk, I. S. (Isidore Sydney), 1899-1984 Disability among gainfully occupied persons; an introduction to disability insurance statistics [by] I. S. Falk, Barkev S. Sanders and David Federman ... Washington, D.C., Federal security agency, Social security board, Bureau of research and statistics, 1945. iv, 60 p. ill. United States. Social Security Board. Bureau of Research and Statistics. Bureau memorandum ; no. 61 "List of references": p. 58-60. Sanders, Barkev Sahak, 1903- Federman, David, 1913-1944. 90898 90898