TY  - BOOK
AU  - Benjamin Bernard and others Ed.
TI  - Resouces and population :  Proceedings of the ninth   
U1  - X:2710gY:5.1.N7, L3 
PY  - 1973///
CY  - London
PB  - Academic Press         
KW  - Natural Resources Economics
N1  - Bibliography at the end of few chapters; Appendix at the end of few chapters
ER  -