Ryan , William J. . <br/><br/>
Water treatment and purification /  
by William J. Ryan. 
 - Jodhpur :   Agrobios (India) ,   2000 
 - 270p :  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering- water
<br/><br/><label>Dewey Class. No.: </label>D85  / P0