HARTER, P.: ARTS ANCIENS DU CAMEROUN, Arnouville, 1986; Gebauer, P.: Art of Cameroon, New York, 1979; Gauthier, Dr.J.G.: Ancient Art of the Northern Cameroons, Oosterhout, 1973; Brain, R.: Bangwa Funerary Sculpture, London, 1971; and 23 others of African interest (27)