Gray  Richard. <br/><br/>
Pre-  Colonial  A frican  Trade. E ssays  on  Trade  in  Central and  Eastern  Africa  Before  1900. 

 - London; Oxford  University  Press. 1970 
<br/><br/><label>Subjects--Topical Terms: </label><br/>History
<br/><br/><label>Dewey Class. No.: </label>967 GRA