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

 - New York  McGraw-hill Book Company  1927 
 - 448 p.  ilus. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SANEAMIENTO RURAL<br/>SANEAMIENTO URBANO
<br/><br/><label>Universal Decimal Class. No.: </label>A/628.4/E32