TY  - BOOK
T1  - Population, resources, environment issues in human ecology
A1  - Ehrlich, Paul R.
A2  - Ehrlich, Anne H.
LA  - English
PP  - San Francisco
PB  - W. H. Freeman
YR  - 1972
UL  - https://tuklas.up.edu.ph/Record/UP-1685523046125144643
OP  - 509
NO  - Third ed. published in 1977 under title: Ecoscience.
NO  - Includes bibliographies.
CN  - HB871 E35 1972
SN  - 0716706954
KW  - Human ecology.
KW  - Pollution.
KW  - Population.
ER  -