TY  - BOOK
AU  - Perman,Roger
AU  - Ma,Yue
AU  - McGilvray,J.
TI  - Natural resource and environmental economics
SN  - 0582257271 :
AV  - HC79 .E5P47
PY  - 1996///
CY  - London
PB  - Longman
KW  - Environmental economics
ER  -