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Baumwollkarte Kamerun . en German map for cotton cultivation in the former German colony Cameroon by de Deutsche Karte zum Baumwollanbau in der damaligen deutschen Kolonie Kamerun von Karl Supf Deutschkoloniale Baumwolluntersuchungen Bericht XII Frhjahr In Der Tropenpflanzer Beiheft zu author PDold Old maps of Cameroon Der