Encyclopedia of soil science / 
edited by Rattan Lal 
 - 2nd ed. 
 - New York :  Taylor & Francis,  2006 
 - 2 v. :  ill. ;  29 cm. 
<br/><br/><label>ISBN: </label>0849338301 9780849338304 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil science--Encyclopedias