Mokhtar, G. <br/><br/>
General history of Africa :ancient civilizations of Africa 
editor G. Mokhtar 
 - \\  abridged edition 
 - Ibadan.  Heinemann Educational Books (Nigeria) Ltd.  1990 
 - vol. 
<br/><br/> Bibliograhpy :p. 395-411 
<br/><br/><label>ISBN: </label>852550979