TROECH, FREDERICK R <br/><br/>
SOILAND WATER CONSERVATION:FOR PRODUCTIVY AND ENVIRONMENTAL PROTECTION 

 - S.E. 
 - ENGLEWOOD Estados Unidos  PRENTICE  HALL  1980 
 - 718 
<br/><br/><label>ISBN: </label>0138221553 
<br/><br/><label>LCCN: </label>23979 
<br/><br/><label>Dewey Class. No.: </label>333.72