Schick, Kathy <br/><br/>
Making silent stones speak :  Human evolution and the dawn of technology 

 - New York :  Simon & Schuster,  [19--] 
 - 351 p: :  ill., tab. 
<br/><br/>bibliogr. p. 325-334 
<br/><br/><label>ISBN: </label>0671693719