Operations of wastewater treatment plants 
California State University 
 - Cuarta ed. 
 - 2 volúmenes 
<br/><br/><label>ISBN: </label>1884701027 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agua--tratamiento
<br/><br/><label>Dewey Class. No.: </label>628.16  / CAL 1994