TY  - BOOK
AU  - Singh,S.R.
TI  - Environmental Economics 
U1  - 333.7 
PY  - 2012///
CY  - New Delhi: 
PB  - APH Publishing , 
KW  - Anthropogenic
KW  - Bio Fuel
KW  - Dysdercus Koenigii
KW  - Economics
ER  -