TY  - BOOK
AU  - CONRAD,JAN M.
AU  - CLARK,COLIN W.
TI  - NATURAL RESOURCE ECONOMICS: NOTES AND PROBLEMS / 
U1  - 333.717 
PY  - 1994///
CY  - [S.N] : 
PB  - CAMLRIDGE UNIVERSITY PRESS ، 
KW  - ENVIRONMENT
KW  - ECONOMICS
KW  - MANAGEMENT
KW  - PLANNING
ER  -