TY  - BOOK
AU  - Mckenna,Hugh F.
ED  - E.U.A. Department of Health, Education and Welfare
TI  - Work sampling: instructions for district offices: general manual
U1  - 368.40973 21
PY  - 1965///
CY  - Estados Unidos
PB  - SSA
KW  - Seguridad social
KW  - Estadísticas
KW  - Perú
ER  -