Sagan, Carl. <br/><br/>
The Dragons of Eden :  Speculations on the Evolution of Human Intelligence / 
Carl Sagan. 
 - New York :  Ballantine Books,  c1977. 
 - 271 p. : 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9780345346292 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Intellect.<br/>Brain.<br/>Genetic psychology.
<br/><br/><label>Dewey Class. No.: </label>509.05  / SAG/D