TY  - BOOK
AU  - Das, R.C.  .
TI  - Environmental science principles and practice / 
SN  - 978-81-203-3330-7
U1  - G:55 
PY  - 2008///
CY  - New Delhi : 
PB  - Prentice-Hall of India Private Limited , 
KW  - Biology
ER  -