Groundwork of Nigerian history / 
edited by Obaro Ikime. 
 - Ibadan, Nigeria :  Published for the Historical Society of Nigeria by Heinemann Educational Books,  1980. 
 - vii, 615 p. :  ill. ; 
<br/><br/><label>ISBN: </label>9781299541 (pbk.) : 9781299533 (hard) 
<br/><br/><label>LC Class. No.: </label>DT515.57  / .G76 1980