Ratnayaka, Don D. <br/><br/>
Twort's water supply / 
Don D. Ratnayaka, Malcolm J. Barandt, K. Michael Johnson 
 - 6th ed. 
 - Oxford :  Butterworth-Heinemann,  2009. 
 - xxxii, 711 p. :  ill. ;  25 cm 
<br/><br/> Previous ed.: published as Water supply by Alan C. Twort, Don D. Ratnayaka and Malcolm J. Brandt. London: Arnold, 2000. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780750668439  RM256.52 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water-supply engineering.