Spencer, Edgar Winston <br/><br/>
Basic concepts of physical geology 
with drawings by Elizabeth Humphris Spencer 
 - New York  Crowell  1962 
 - 472p.  illus.  28cm 
<br/><br/>Includes bibliography 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physical geology
<br/><br/><label>Dewey Class. No.: </label>551.4  / SPE