"Lagerstätte." . . "Mining." . . "Zasoby mineralne Afryka." . . "Mines." . . "Yacimientos minerales África." . . . "The mineral resources of Afrika" . "The mineral Resources of Africa" . . . "Mineral resources of Africa" . . . . . . . . . . "The mineral resources of Africa. [With maps and a bibliography.]"@en . . . . . "The mineral resources of Africa" . "The mineral resources of Africa"@en . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "The Mineral Resources of Africa. [With maps.]"@en . . . "The Mineral resources of Africa" . . . . . "Soils." . . "Jaciments minerals." . . "Minéraux Afrique." . . "Afrique." . . "Mijnbouwindustrie." . . "Ressources minérales Afrique." . . "ressources minérales Afrique." . "Mineral resources." . . "Mines et ressources minières Afrique." . . . . "Lagerstättenkunde." . . "Zasoby naturalne Afryka." . . "Minerals." . . "Mines and mineral resources Africa." . . "Africa." . . "Àfrica." . . "Africa." . "Mines and mineral resources." . . "Rohstoffreserve." . . "Afrika." . . "Geology." . . "Przemysł górniczy Afryka." . . "Mineralischer Rohstoff." . . "Mines Afrique." . .