Gray, Robert F., 1912-  Gray, Robert F., 1912- <br/><br/>
The Sonjo of Tanganyika :  an anthropological study of an irrigation-based society. 

 - London ; New York :  London ; New York :  Published for the International African Institute by Oxford University Press,  1963. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sonjo (African people)<br/>Irrigation -- Africa, East.--Irrigation -- Africa, East.
<br/><br/><label>LC Class. No.: </label>GN 659.S6 GRA 1983