Ehlers, Víctor M. <br/><br/>
Municipal and rural sanitation 

 - 5 ed. 
 - New York :  McGraw-Hill,  1958 
 - 596 p.  : ilus. 
<br/><br/><label>LCCN: </label>25402 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ingeniería sanitaria.
<br/><br/><label>Dewey Class. No.: </label>628.7  / E45