Petersen, James F. <br/><br/>
Fundamentals of physical geography / 
James F. Petersen, Dorothy Sack, Robert E. Gabler. 
 - 2nd ed. 
 - Stamford, CT.  Cengage Learning,  2015. 
 - pages cm 
<br/><br/><label>ISBN: </label>9781133606536 
<br/><br/><label>LCCN: </label>2013945907 
<br/><br/><label>LC Class. No.: </label>GB55  / PET2011