Hilgard, Eugene Waldemar. <br/><br/>
Soils ; their formation, properties, composition and relations to climate and plant growth in the humid and arid regions 

 - New York :  MacMillam,  1930 (c.1906) 
 - 593 p.  : ilus. 
<br/><br/><label>LCCN: </label>59829 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Suelos.
<br/><br/><label>Dewey Class. No.: </label>631.4  / H55