00642nam a22002297a 4500 OSt 190115b xxu||||| |||| 00| 0 eng d 0849382831 628.162 V69W Vigneswaran, S. Water Treatmant Processes : simple options Boca Raton CRC Press 1995 215p. New Directions in Civil Engineering Technology (Applied Sciences) Engineering and Allied Operations Treatment Water Purification Appropriate Technology Visvanathan, C. ddc BK 20310 20310 0 0 ddc 0 0 RAU RAU 2017-02-10 BGB New Delhi 105.00 0 628.162 V69W 73266 2019-01-15 2019-01-15 BK