TY  - BOOK
AU  - Spengler, Joseph J (Ed.)
AU  - Duncan, Otis Dudley (Ed.)
TI  - Demographic analysis: selected readings
U1  - 312 21st
PY  - 1956///
CY  - Glencoe
PB  - Free Press
KW  - Demographic surveys; Fertility, Human; Mortality
ER  -