Troeh, Frederick R. <br/><br/>
Soil and water conservation :  productivity and environmental protection 
/by Frederick R. Troeh, J. Arthur Hobbs and Roy L. Donahue 
 - 3 ed. 
 - New Jersey :  Prentice Hall,  1999. 
 - 610 p. :  ilus. 
<br/><br/><label>ISBN: </label>0136222005 
<br/><br/><label>LCCN: </label>83842 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agua--Conservacion.<br/>Erosión.<br/>Suelos--Conservación.
<br/><br/><label>Dewey Class. No.: </label>631.45  / T7 1999