Columbia subject headings:
Harvard subject headings:
Africa, East--Foreign economic relations--Austria.
Austria--Foreign economic relations--Africa, East.
Austria--Politics and government--1867-1918.
Höhnel, Ludwig, Ritter von, 1857-1942--Travel--Africa, East.
Markus, Otto, 1878-1955.
Princeton subject headings:
Africa, East--Foreign economic relations--Austria.
Austria--Foreign economic relations--Africa, East.
Austria--Politics and government--1867-1918.
Höhnel, Ludwig, Ritter von, 1857-1942--Travel--Africa, East.
Markus, Otto, 1878-1955.