TY  - BOOK
AU  - Basak,N.N
TI  - Environmental engineering
SN  - 0070494630 (paperback)
U1  - 628BAS 
PY  - 2014///
CY  - [S.l.]
PB  - Tata Mcgraw Hill
UR  - http://www.amazon.com/exec/obidos/ASIN/0070494630/chopaconline-20
ER  -