TY  - BOOK
AU  - Pushpendra 
AU  - Singh,Upendra
AU  - Singh,Inder Paul
TI  - Environmental Engineering-I
SN  - 9789381348208
U1  - 620.8 PUS 
PY  - 2010///
CY  - New Delhi
PB  - Vayu Education of India
ER  -