Columbia subject headings:
Harvard subject headings:
Austro-Hungarian Monarchy. Kriegsmarine--Officers--Biography.
Austro-Hungarian Monarchy. Kriegsmarine. Donauflottille--History.
Danube River Valley--History, Naval--20th century.
Wettstein, Karl.
World War, 1914-1918--Artillery operations, Austrian.
World War, 1914-1918--Campaigns--Danube River Valley.
World War, 1914-1918--Naval operations, Austrian
World War, 1914-1918--Naval operations--Submarine
World War, 1914-1918--Personal narratives, Austrian
Princeton subject headings:
Austro-Hungarian Monarchy. Kriegsmarine--Officers--Biography.
Austro-Hungarian Monarchy. Kriegsmarine. Donauflottille--History.
Danube River Valley--History, Naval--20th century.
Wettstein, Karl.
World War, 1914-1918--Artillery operations, Austrian.
World War, 1914-1918--Campaigns--Danube River Valley.
World War, 1914-1918--Naval operations, Austrian.
World War, 1914-1918--Naval operations--Submarine.
World War, 1914-1918--Personal narratives, Austrian.