TY  - BK
AU  - Ehrlich,P.R.
AU  - Ehrlich,A.H.
AU  - Holdren,J.P.
TI  - Ecoscience:  Population, resources, environment
SN  - 0-7167-0567-2
U1  - 363.9 
PY  - 1977///
CY  - San Francisco, CA (USA)
PB  - W.H. Freeman and Company, 
ER  -