Columbia subject headings:
Harvard subject headings:
Air pilots--Austria--Biography.
Fighter pilots--Austria--Biography.
World War, 1914-1918--Aerial operations, Austrian.
World War, 1939-1945--Biography
Princeton subject headings:
Air pilots--Austria--Biography.
Fighter pilots--Austria--Biography.
World War, 1914-1918--Aerial operations, Austrian.
World War, 1939-1945--Biography.