Collected papers /    
edited by W. G. Ogg. 
 -  Aberdeen,   1938. 
 - v. :    ill., plates, tables ;    24 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil research.--------
<br/><br/><label>Dewey Class. No.: </label>631.4 MACA