Smethurst, George. <br/><br/>
Basic water treatment :  for application world-wide / 
George Smethurst. 
 - London :  Telford,  1979. 
 - vii, 216 p. :  ill. 
<br/><br/><label>ISBN: </label>0727700715 :  �7.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water--Purification