ῌasan, Yūsuf Faḍl.  <br/><br/>
The Central Bilād Al Sûdan: Tradition and Adaption  

 -  El Tamaddon Press Ltd.   1977 
<br/><br/><label>Source: </label>Textbook 
<br/><br/><label>Subjects--Topical Terms: </label><br/>African StudiesPolitical Science