Disability among gainfully occupied persons. An introduction to disability insurance statistics. I. S. Falk, Barkev S. Sanders and David Federman... Federal security agency. Social security board. Bureau of research and statistics
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Disability among gainfully occupied persons. An introduction to disability insurance statistics. I. S. Falk, Barkev S. Sanders and David Federman... Federal security agency. Social security board. Bureau of research and statistics
Barkev S. Sanders, I Falk, David Federman, Etats-Unis
Autre
Première publication : 1945