World reference base for soil resources, 2006 :    a framework for i nternational classification, correlation, and communication. 

 - 2006 ed. 
 - Rome :    Food and Agriculture Organization of the United Nations,    2006. 
 - ix, 128 p. ;    30 cm. 
 - World soil resources reports,    103   0532-0488 ;  .
<br/><br/>Includes bibliographical references (p. 121-122). 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Soils -- Classification