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Carte géologique du Katanga et notes descriptives (1908)
Studt, Franz Eduard · Bruxelles, [Impr. veuve Monnom] · leaf 36
Geology · Mines and mineral resources · Geology -- Congo (Democratic Republic) -- Katanga · Mines and mineral resources -- Congo (Democratic Republic) -- Katanga
Internet Archive · Smithsonian Libraries and Archives · Public domain (published before 1931). Free to use for anything.
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