Huisman, L. <br/><br/>
Slow sand filtration:  by L. Huisman and W.E. Wood. 

 - Geneva:  World Health Organization,  1974 
 - 122 p.:  ill.;  24cm 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9241540370 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental health.<br/>Water treatment.
<br/><br/><label>Dewey Class. No.: </label>628.1 HUI