TY  - BOOK
AU  - Keyfitz, Nathan
AU  - Flieger, Wilhelm
TI  - Population: facts and methods of demography
SN  - 0-7167-0931-7
U1  - 301.32 21st
PY  - 1971///
CY  - San Franciso
PB  - W H Freeman and Company
KW  - Population; Population density; Human ecology; Fertility, Human; Population-Statistics
ER  -