Wallace, Robert. <br/><br/>
The Grand Canyon / 
by Robert Wallace and the editors of Time-Life Books ; with photos. by Ernst Haas. 
 - New York :  Time-Life Books,  1973. 
 - 184 p. : col. ill. 
 - The world's wild places .
<br/><br/><label>ISBN: </label>0705400913 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Grand Canyon (Arizona).