Diop, Cheikh Anta. <br/><br/>
Black Africa :  the economic and cultural basis for a federated state / 
Cheikh Anta Diop ; translated by Harold J. Salemson. 
 - New expanded ed. 
 - Westport, Conn. :  Trenton, N.J. :  L. Hill ;  Africa World Press,  1987. 
 - 125 p. ;  21 cm.