TY  - GEN
AU  - Ehrlich P R, Ehrlich A.H.
TI  - Population resources, environment : issues in human ecology
T2  - (A series of books on biology)
SN  - 0-7167-0695-4
AV  - 2nd ed. 
PY  - 1972///
CY  - San Francisco : 
PB  - W.H. Freeman
KW  - Population
KW  - Environment
KW  - Ecology
ER  -