"Mineral resources of the colonies in Africa. Prof. Dr. Heinz Hielt gave a photo lecture - "The Geological Structure of Africa." (newspaper article) Add to clipboard 46 File 1942 Part of City Archive Altenburg Article about lecture In: City Archive Altenburg >> Estate Grummelt
The political and economic development of D e u t s c h - O s t a f r i k a - newspaper clippings about a lecture by J. Graf von Pfeil Add to clipboard BArch, N 2225/71 File Jan. 1892, März 1892, Juli (1892) Part of Federal Archives (Archivtektonik) In: Newspaper clippings and maps Pfeil, Joachim von