TY  - BOOK
AU  - Hill, Reuben
AU  - Stycos, J M
AU  - Back KW
TI  - Family and population control: A Puerto Rican experiment in social change
U1  - 304.666 
PY  - 1959///
CY  - Chapel Hill
PB  - Univ. of North Carolina Press
KW  - Birth control
KW  - Families
KW  - Puerto Rico
ER  -