TY  - BOOK
AU  -  Perman,Roger
AU  -   Ma,Yue
AU  - McGilvray,James
TI  - Natural Resource And Environmental Economics
SN  - 0-582-25727-1
U1  - 333.7PEN 
PY  - 1996///
CY  - London
PB  - Longman
KW  - Economics
ER  -