SAHARA AND SUDAN. III. The Chad Basin and Bagirimi.
London: 1987. First published in German in Berlin, 1893. xxii, 519 pages, 46 illustrations, 3 fold-out maps in rear pocket. Cloth cover. More
London: 1987. First published in German in Berlin, 1893. xxii, 519 pages, 46 illustrations, 3 fold-out maps in rear pocket. Cloth cover. More