Onset of disability
368.40973 / E582ss.18
E.U.A. Department of Health, Education and Welfare Social Security Administration
Onset of disability / Ralph Treitel. -- Washington: SSA. Office of Research and Statistics, 1972. 28 p. ; 27 cm. (SSA 72-11713)
"From the social security survey of the disabled: 1966"
Bibliografía p. 12-13.
Desempleo--Estados Unidos
Treitel, Ralph,