TY  - BOOK
AU  - Sinha,A K
AU  - Vishwanathan,P N
AU  - Ram Boojhi
TI  - Water Pollution ( Conservation and Management)
SN  - 818509716X
U1  - 628.16 
PY  - 1989///
CY  - Nainital
PB  - Gyanodaya Prakashan
ER  -