Powers, Wilbur Louis. <br/><br/>
Land drainage 

 - 3 ed. 
 - New York :  Wiley,  1932 
 - 353 p.  : ilus. 
<br/><br/><label>LCCN: </label>54056 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Drenaje.
<br/><br/><label>Dewey Class. No.: </label>631.6  / P68 1932