"cuivre industrie Afrique origines / 19e s." . . "Minas de cobre África subsahariana." . . "Industries primitives Afrique noire." . . "Kupferbergbau Afrika Geschichte." . . "Africa, Sub-Saharan." . . "Africa, Sub-Saharan" . "metaal." . . "Handel." . . . . "Copper mines and mining." . . "Industria del cobre África subsahariana." . . "Cuivre Mines et extraction Afrique noire." . . "Kupfer." . . "Cuivre Folklore." . . "koper." . . "Koper." . "Cuivre Industrie Afrique noire." . . "Geschichte." . . "Symbolik." . . "Cuivre Industrie et commerce Afrique noire." . . "Geschichte." . . "Traditionale Gesellschaft." . . . . . . . . . . . . . . "Red gold of Africa copper in precolonial history and culture"@en . . . . . . . . . "Red gold of Africa" . . . "Folklore"@en . "Folklore" . . . "History" . . . . . "Red gold of Africa : copper in precolonial history and culture"@en . "Red gold of Africa : copper in precolonial history and culture" . . . . . . . . . . . . . . . . . . . "Red Gold of Africa : Copper in Precolonial History and Culture" . . . "Red gold of Africa : Copper in precolonial history and culture" . . . . . . . "Copper industry and trade." . . "Kupfer Afrika Geschichte." . . "Afrika." . . "Copper." . . "Afrique noire." . . "Afrika" . . "Industries, Primitive." . .