Troeh, Frederick R <br/><br/>
Soils and Soil Fertility  
/ by Frederick R Troeh & Louis M. Thompson  
 - 6th ed. 
 - USA:  Backwell Publishing,   2005.  
 - vii,489p.  
<br/><br/><label>ISBN: </label>9788126517879 
<br/><br/><label>Dewey Class. No.: </label>631.422  / TRO/S