Harper, Robert Alexander. <br/><br/>
Between two worlds :  an introduction to geography. 

 - 2d ed. 
 - Boston :  Houghton Mifflin,  1978. 
 - xxi, 633 p. 
<br/><br/><label>ISBN: </label>0395251648 
<br/><br/><label>Dewey Class. No.: </label>910  / HAR