Mack, John D., author. <br/><br/>
Physical geology :  study guide / 
John D. Mack. 
 - 247 pages :  illustrations ;  30 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physical geology.
<br/><br/><label>Dewey Class. No.: </label>DC 551.076  / M19