TY  - BOOK
AU  - Santra, S.C.
TI  - Environmental science
SN  - 817381404X
U1  - 304.28 
PY  - 2005///(2010 rep.)
CY  - Calcutta
PB  - New central Book
KW  - Ecology
KW  - Environmental science
N1  - Includes bibliographical references, glossary and index
ER  -