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1كتاب
المؤلفون: Olpen, Bernhard, author.
مصطلحات موضوعية: Businessmen -- Germany -- Biography., Missions, German -- Africa, West -- History -- 20th century., Businesspeople -- Germany -- Biography., Church and state -- Germany -- History -- 19th century.
Subject Person: Vietor, Johann Karl, 1861-1934., Viëtor, Karl, 1892-1951.
جغرافية الموضوع: Germany -- Commerce -- Africa, West., Africa, West -- Commerce -- Germany., Germany -- Colonies -- History., Africa, West -- Colonies -- History., Germany -- Colonies -- Africa -- History.