Oppen, Achim von. <br/><br/>
Terms of trade and terms of trust  the history and contexts of pre-colonial market production, around the Upper Zambezi and Kasai. 

 - VIII, 473 p.  ill., maps. 
 - Studien zur Afrikanischen Geschichte  6 .
<br/><br/><label>ISBN: </label>3-89473-246-6 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Africa, Central--History--To 1884.<br/>Africa, Southern--History--To 1899.<br/>Kasai River Watershed (Angola and Congo)--Commerce--History.<br/>Zambezi River Watershed--Commerce--History.