TY  - BOOK
AU  - Willis Kenneth G
AU  -  Garrod Guy
TI  - Economic valuation of the environment:  Methods and   
SN  - 1858986842
U1  - X:(G:55), N9 
PY  - 1999///
CY  - Cheltenham
PB  - Edward Elgar         
KW  - Economics irt Environment
ER  -