TY  - BOOK
AU  - Hussen, Ahmed M  .
TI  - Principles of environmental economics: economics, ecology and public policy / 
SN  - 0-415-19570-5
U1  - X:(G:55) 
PY  - 2000///
CY  - New York : 
PB  - Routledge , 
KW  - Environmental policy
ER  -