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

 - 2 
 -  1956 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>68385 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chemistry
<br/><br/><label>Dewey Class. No.: </label>D86.71, J6