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Gulliver, P.H.1960Review. American Anthropologist62: 900-903.
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Herskovits, M.J.1962The Human Factor in Changing Africa. New York: Knopf.
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Huntingford, G.W.B.1960Review. Africa30: 277-278.
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Murdock, G.P.1949Social Structure. New York: Macmillan.
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1959Africa: Its Peoples and Their Culture History. New York: McGraw-Hill.
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