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Reports

Wasserverhältnisse und Bohrversuche im Süden des Schutzgebietes Togo, insb. durch die Internationale Bohrgesellschaft AG, Erkelenz. Study by the district geologist Dr Koert 'On the water conditions in southern Togo' in: Mitteilungen von Forschungsreisenden, Volume XVIII, Issue 4, 1905 (print)