TY  - BOOK
AU  - Ehrlich,Paul R.
AU  - Ehrlich,Anne H.
TI  - Population resources environment: issues in human ecology 
T2  - Series of books in biology
SN  - 0716706806
AV  - HB871 .E35
U1  - 301.3 
PY  - 1970///
CY  - San Francisco
PB  - W. H. Freeman & Company
KW  - Human ecology
KW  - Pollution
KW  - Population
N1  - Third ed. published in 1977 under title: Ecoscience; Bibliography: p. [360]-363
ER  -