Imhoff, Karl. <br/><br/>
Sewage treatment 

 - 2th 
 - United States :   Wiley,   1956. 
 - 6-338p; 21cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aguas residuales<br/>Tratamiento aguas residuales
<br/><br/><label>Universal Decimal Class. No.: </label>628.3