Gray, Robert F.,  1912- <br/><br/>
The Sonjo of Tanganyika :  an anthropological study of an irrigation-based society / 
Robert F. Gray. 
 - London :  Published for the International African Institute by Oxford University Press,  1963. 
 - xii, 181 p. :  ill. ;  19 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sonjo (African people)
<br/><br/><label>Dewey Class. No.: </label>916.782  / GRS 1963