Spencer, Edgar Winston. <br/><br/>
Basic concepts of physical geology. 
With drawings by Elizabeth Humphris Spencer. 
 - New York,  Crowell  [c1962]1964 
 - 4467 p.  illus.  26 cm. 
<br/><br/>Includes bibliography. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physical geology.
<br/><br/><label>Dewey Class. No.: </label>551.  / SPB 1964