TY  - BOOK
AU  - ELANGOVAN R
TI  - UNIT OPERATIONS IN ENVIRONMENTAL ENGINEERING 
SN  - 81-224-1097-9
U1  - 628.17 628.17 ELA N97 ELA/SAS 
PY  - 1997///
CY  - NEW DELHI
PB  - NEW AGE INTERNATIONAL
ER  -