TY  - BOOK
AU  - Duffy,Edward J.
TI  - Family social status and fertility
PY  - 1980///
CY  - Ann Arbor, Mich.
PB  - University Microfilms International
KW  - Fertility, Human
KW  - United States
N1  - Thesis (Ph.D.)-Duke University, 1980
ER  -