David Federman

Œuvres (1)

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

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

1945