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

 - 5th ed. 
 - Oxford  Clarendon Press  1971 
 - 144 p. 
<br/><br/><label>ISBN: </label>0198541171 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil science
<br/><br/><label>Dewey Class. No.: </label>631.47  / CLA