Ratnayaka, Don D. <br/><br/>
Twort's water supply/ 
Don D. Ratnayaka, Malcolm J. Brandt and Michael Johnson 
 - 6th ed. 
 - Amesterdom, The Netherland :  Elsevier,  c2009 
 - xxxi, 711 p., [34] p. of col. plates :  ill.;  25 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780750668439  $ 94.95 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water supply engineering
<br/><br/><label>Dewey Class. No.: </label>628.1