TY  - BOOK
AU  - Katyal,T.
AU  - Katyal,Mohan
AU  - Chhawal,G.R.
AU  - Mehra,M.C.
TI  - Environmental water pollution and its control
SN  - 8170412145
U1  - 363.7 
PY  - 1993///
CY  - New Delhi
PB  - Anmol Publications
KW  - Water-Pollution
N1  - Includes bibliographies
ER  -