Spencer, Edgar Winston. <br/><br/>
Physical geology/ 
Edgor Winston Spencer. 
 - Reading, Mass.:  Addison-Wesley,  1983. 
 - 609 p. :   ill. ;   29 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0201064235 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physical geology.