Clarke, G. R. <br/><br/>
The study of the soil in the field 

 - 2 ed. 
 - Oxford :  Clarendon,  1938 
 - 191 p. 
<br/><br/><label>LCCN: </label>21447 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Suelos.<br/>Suelos--Topografía.
<br/><br/><label>Dewey Class. No.: </label>631.47  / C53