Graeber, David. <br/><br/>
The dawn of everything :  a new history of humanity / 
by David Graeber and David Wengrow. 
 - xiv, 691 p. :  20 cm. 
<br/><br/>Includes index and references (p.675-691) 
<br/><br/><label>ISBN: </label>9780141991061 
<br/><br/><label>Dewey Class. No.: </label>901  / G756d