Voll, John Obert,  1936-, <br/><br/>
Historical dictionary of the Sudan /by John Obert Voll. 

 - Metuchen, New Jersey :  Scarecrow Press,  (c)1978. 
 - xvii, 175 pages :  map ;  23 cm. 
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<br/><br/><label>LCCN: </label>77028798 //r82 
<br/><br/><label>LC Class. No.: </label>DT155  / .H578 1978