Visser S. A. <br/><br/>
Kainji :  a Nigerian man-made lake / 
edited by S. A. Visser 
 - Ibadan  The Nigerian institute of social and economic research  1970 
 - viii, 126P.  ill., Pbk 
<br/><br/><label>LC Class. No.: </label>GF67.N6.N5