Quano, E.A.R. <br/><br/>
Principles of wastewater treatment 
E. A .R. Quano 
 - Manila, Philippines  National Science Development Board  c1981 
 - v.;  22cm. 
<br/><br/> v.1: Biological processes. 
<br/><br/><label>Dewey Class. No.: </label>628.16  / QUA