TY  - BOOK
AU  - Kula Erhun
TI  - Economic of natural resouces and the environment
U1  - X;271:(G:55), N2 
PY  - 1992///
CY  - London
PB  - Chapman and Hall        
KW  - Natural Resources Economics
N1  - Bibliography: P271-80; Appendix: P 264-70
ER  -