Logsdon, Gary S. <br/><br/>
Water filtration practices :  including slow sand filters and precoat filtration / 
Gary S. Logsdon 
 - Denver, CO :  American Water Works Association,  c2008 
 - xvii, 295 p. :  ill. ;  26 cm. 
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>1583215956 (pbk.) 9781583215951 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water--Purification--Filtration<br/>Water--Purification--Slow sand filtration