An Economic history of tropical Africa / 
selected and edited by Z. A. Konczacki and J. M. Konczacki. 
 - London ;  Totowa, N.J. :  Frank Cass,  1977- 
 - v. :  maps ;  23 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/>v. 1. The pre-colonial period. 
<br/><br/><label>ISBN: </label>0714629197 (v. 1) :  £9.95 (v. 1) 
<br/><br/><label>LCCN: </label>72092967  
<br/><br/><label>Nat. Bib. No.: </label>GB*** 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Africa, Sub-Saharan--Economic conditions.
<br/><br/><label>LC Class. No.: </label>HC502  / .ECO 1977