Sagan, Carl,   1934-1996. <br/><br/>
The dragons of Eden :  speculations on the evolution of human intelligence / 
Carl Sagan. 
 - 1st ed. 
 - New York :  Random House,  c1977. 
 - 263 p. :  ill. ;  25 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. [241]-249. 
<br/><br/><label>ISBN: </label>0394410459  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Intellect<br/>Brain<br/>Genetic psychology
<br/><br/><label>LC Class. No.: </label>BF431 
<br/><br/><label>Dewey Class. No.: </label>153