Christopherson, Robert W. <br/><br/>
Elemental geosystems / 
Robert W. Christopherson. 
 - 2nd ed. 
 - Upper Saddle River, NJ :  Prentice Hall,  c1998. 
 - xvii, 534, 39 p. :  col. ill., col. maps ;  26 cm. 
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0137435355 
<br/><br/><label>LCCN: </label>97011394  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physical geography.
<br/><br/><label>LC Class. No.: </label>GB54.5  / .C47 1998