TY  - BOOK
AU  - Callan, Ecott J
AU  - Thomas Janet M
TI  - Environmental economics and management : : theory policy and applications / 
SN  - 9788131527641
U1  - 338.927068 
PY  - 2013///
CY  - New Delhi : 
PB  - Cengage Learning, 
KW  - environmental economics
ER  -