Gray, N. F. <br/><br/>
Water technology :  an introduction for scientists and engineers / 
by N. F. Gray. 
 - London :  Arnold,  1999. 
 - xi, 548 pages :  illustrations ;  24 cm. 
<br/><br/><label>ISBN: </label>0340676450 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water quality management<br/>Sewage disposal<br/>Freshwater biology<br/>Water quality biological assessment
<br/><br/><label>LC Class. No.: </label>TD365  / G79 1999