Kohnke, Helmut. <br/><br/>
Soil conservation 

 - New York :  McGraw-Hill,  1959 
 - 298 p.  : ilus. 
 - McGraw-Hill publications in the agricultural sciences .
 - McGraw-Hill publications in the agricultural sciences .
<br/><br/><label>LCCN: </label>28558 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Suelos--Conservación.
<br/><br/><label>Dewey Class. No.: </label>631.45  / K6