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
U1  - 337.7 
PY  - 1972///]
CY  - San Francisco
PB  - W. H. Freeman
KW  - Population
KW  - Pollution
KW  - Human ecology
N1  - Third ed. published in 1977 under title: Ecoscience
ER  -