368.40973 / E582wo 1960
E.U.A. Department of Health, Education and Welfare Social Security Administration
Workers under social security 1960. Annual and work history statistics. Employment, earning, insurance status under old-age, survivors, disability,and health insurance . -- Washington: SSA. Office of Research and Statistics, 1968. 337 p. ; 26 cm.
006878
Jubilaciones y pensiones--Estados Unidos
Seguridad social--Estados Unidos--Estadísticas