Pre-colonial African trade :  essays on trade in Central and Eastern Africa before 1900 / 
ed. by Richard Gray and David Birmingham. 
 - London :  OUP,  1970. 
 - 308 p. 
<br/><br/><label>ISBN: </label>19215639X : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trade--Africa.
<br/><br/><label>LC Class. No.: </label>HF3876  / .P74