TY  - BOOK
ED  - E.U.A. Social Security Administration
TI  - A brief history of social security. Social security 60th anniversary
U1  - 368.40973 21
PY  - 1995///
CY  - Washington?
PB  - SSA
KW  - Seguridad social
KW  - Historia
KW  - Estados Unidos
ER  -