Wright, Richard T. <br/><br/>
Environmental science 

 - Delhi :  Pearson Education International,  1994 
 - 704. 
<br/><br/><label>ISBN: </label>0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sanitary municipal engineering
<br/><br/><label>Dewey Class. No.: </label>628.5  / WRI