TY  - BOOK
AU  - Ashworth, William
AU  - Little, Charles E.
TI  - Viva-Facts on File encyclopedia of environmental studies
SN  - 978-81-309-1542-5
U1  - 375.008303 
PY  - 2006///, r2011
CY  - Kolkata
PB  - Viva Books
KW  - ENVIRONMENTAL STUDIES
KW  - ENCYCLOPEDIAS
ER  -