TY  - BOOK
AU  - Ehrlich, Paul R
AU  - Ehrlich, Anne H
TI  - Population resources environment: issues in human ecology
SN  - 0-7167-0680-6
U1  - 301.32 21st
PY  - 1970///
CY  - San Francisco
PB  - W H Freeman and Company
KW  - Population; Population-Environmental aspects; Human ecology
ER  -