TY  - BOOK
AU  - Das, R.C. et. al.
AU  - Behera, D.K.
TI  - Environmental science : : principles and practice
AV  - GE105.D3 2008 
PY  - 2008///
CY  - New Delhi
PB  - Prentice Hall of India 
KW  - Environmental science
ER  -