Twist, Clint <br/><br/>
Life on Earth :  Fossils and Human Ancestors the Basics of Life / 
Clint Twist. 
 - 96 pages :   illustrations ;  28 cm. 
 - Collier's Encyclopedia of Science .
<br/><br/><label>ISBN: </label>15171610332 
<br/><br/><label>Dewey Class. No.: </label>503