Okun, Daniel Alexander. <br/><br/>
Community wastewater collection and disposal / 
Daniel A. Okun and George Ponghis. 
 - Geneva :  [Albany, N.Y. :  World Health Organization ;  sold by the Q. Corp.],  1975. 
 - xii, 287 p. : 
<br/><br/> "Corrigendum" (8 p.) inserted. 
<br/><br/><label>ISBN: </label>9241560452 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewerage.<br/>Sewage disposal.