TY  - BOOK
AU  - Lewis, W. M. 
TI  - Developments in water treatment - 1
SN  - 0853349029
U1  - 628.16 
PY  - 1980///
CY  - London
PB  - Applied Science publishers
KW  - Water - purification
N1  - Copy price USD 55.67 (1 USD = LKR 178.13 as at 16.11.2018)
ER  -