Jack Goody 
The Social Organisation of the Lo Wiili [PDF ebook] 

Originally published in 1967 (second edition) presents an account of the life and social organisation of the Lo Wiili of the Haute Volta and Ghana. Chapters on the geographic and ethnographic background and economic system are followed by a detailed analysis of Lo Wiili social organisation which in its broad outlines is typical of the general area. Of particular theoretical interest, however, is the co-existence in the one society of both patriclans and matriclans and the way in which the Lo Wiili see themselves not as a boundary-maintaining group (»tribe») but define themselves by cultural criteria which are relative to the group with which they are being compared. The study is also concerned with the traditional role of the Earth Shrine in maintaining social control, a widespread feature of West African societies.