TY  - BOOK
AU  - Ashworth, William
AU  - Little, Charles E
TI  - Encyclopaedia of environmental studies 
SN  - 81-309-0236-2
U1  - 333.703 
PY  - 2006///
CY  - New Delhi
PB  - Viva Books Pvt.Ltd.
KW  - Environmental studies- Encyclopaedias
KW  - Economics
N1  - Includes index
ER  -