TY  - BOOK
AU  - Yadav, P.R. & Mishra, Shubhrata R.
TI  - Environmental biology
SN  - 81-7141-756-6
U1  - Cir. 574 Y19 c2004 
PY  - 2004///
CY  - India
PB  - Discovery Publishing House
ER  -