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Africa in social change : changing traditional societies in the modern world
Lloyd, Peter Cutt, (1967)
Tribe and class in Monrovia
Fraenkel, Merran, (1964)
Gesellschaftliche Umschichtungen in den Niederlanden
Bouman, Pieter J., (1948)
Etoro social structure : a study in structural contradiction
Kelly, Raymond C., (1977)