Soil survey manual. 

 - Washington :  Government Printing Office ,  1951 
 - vii, 503p. :  ill. ;  20 cm.  
 - USDA agriculture handbook .
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture<br/>Soil surveys<br/>Manuals<br/>Soils
<br/><br/><label>Dewey Class. No.: </label>631.4  / US