Columbia subject headings:
Harvard subject headings:
Königsberg (Cruiser)
Lettow-Vorbeck, Paul Emil von, 1870-1964
Rufiji River (Tanzania)--History.
World War, 1914-1918--Campaigns--Africa, East
World War, 1914-1918--Naval operations, German
World War, 1914-1918--Tanzania--Rufiji River.
Princeton subject headings:
Rufiji River (Tanzania)--History.
World War, 1914-1918--Africa, East--Naval operations, German.
World War, 1914-1918--Campaings--Africa, East.