TY  - BOOK
AU  - Ehrlich,Paul R.
AU  - Ehrlich,Anne H.
TI  - Population resources environment: issues in human ecology 
T2  - A Series of books in biology
SN  - 0716706806
U1  - 301.3 19
PY  - 1970///
CY  - San Francisco,
PB  - W. H. Freeman
KW  - Population
KW  - Pollution
KW  - Human ecology
N1  - Includes Bibliography & index
ER  -