Christopherson, Robert W <br/><br/>
Geosystems  An Introduction to Physical Geography 
by Robert W. Christopherson 
 - 7th ed 
 - New Jersey  Prentice Hall  2008 
 - xxi, vp 
<br/><br/> include CD-ROM 
<br/><br/><label>ISBN: </label>9780136005988 
<br/><br/><label>Dewey Class. No.: </label>550  / P09