Land-capability classification 

 - Washington :  The Service,  (1966) 
 - 21 p. 
 - Agriculture handbook  ; 210 .
 - Agriculture handbook  ; 210 .
<br/><br/><label>LCCN: </label>42746 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Suelos--Clasificación.