TY  - BOOK
AU  - Ehrlich,Paul R.
AU  - Ehrlich,Anne H.
TI  - Population, resources, environment : : issues in human ecology / 
SN  - 0716706954
U1  - 301.3 
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;  Includes bibliographical references
ER  -