Walker, Bryce S. <br/><br/>
The great divide /   / 
Bryce S Walker; Editors of Time-Life Books. 
 - Alexandria :   Time-Life Books,  1973., 
 - 184 p. :   illustrations ;   26 cm. 
<br/><br/> The American Wilderness / time-life books  
<br/><br/>Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Natural history<br/>Rocky Mountains
<br/><br/><label>Dewey Class. No.: </label>500.978  / WAG 1979