Carter Vernon, Gill. <br/><br/>
Topsoil and civilization  
/ by Tom Dale & Vernon Gill Carter. 
 - Norman,   University of Oklahoma Press   1955. 
 - 292 p. :  illus.   23 cm.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture --History; Soils.
<br/><br/><label>Dewey Class. No.: </label>631.45 TOP