TY  - BOOK
AU  - VERMA, P. S.
AU  - Agarwall, V.K.
TI  - Enviormental biology
SN  - 978-81-21-9085-97
U1  - 580.7 
PY  - 2005///
CY  - Kolkata
PB  - S Chand
KW  - Biology
N1  - includes index
ER  -