Smith, Anthony. <br/><br/>
The great rift valley :  Africa's changing valley / 
Anthony Smith. 
 - New York, NY :  Sterling Publishing,  1988 
 - 224 p. :  ill. (col)., maps. 
<br/><br/><label>ISBN: </label>0806969067 
<br/><br/><label>LCCN: </label>90044023     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rifts (Geology)--Africa.<br/>Valleys--Africa.<br/>Nature conservation--Africa.<br/>Wilderness areas--Environmental aspects.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Great Rift Valley.