Twort, A. C. Water supply / Alan C. Twort, Don D. Ratnayaka, Malcolm J. Brandt. - 5th ed. - London : Arnold/IWA Pub., 2000. - xii, 676 p. : ill. ; 25 cm. Previous ed.: 1994. ISBN: 0340720182 Subjects--Topical Terms: Water-supply engineering. Dewey Class. No.: 628.1 / TWO P01W