TY  - BOOK
ED  - E.U.A. Department of Health, Education and Welfare
TI  - Facts for fiscal year 1971
U1  - 368.40973 21
PY  - 1972///
CY  - Washington
PB  - SSA. Office of Administration
KW  - Seguridad social
KW  - Estadística
KW  - Estados Unidos
KW  - 1971
ER  -