Twort, A.C. Water supply / A.C. Twort, F.M. Law, F.W. Crowley, D.D. Ratnayaka. - vi, 511 pages: illustrations; 25 cm. Includes index: p504-511. ISBN: 0340692766 Subjects--Topical Terms: Water supply engineering.Water supply. Dewey Class. No.: 628.1