Columbia subject headings:
Harvard subject headings:
Trentino-Alto Adige (Italy)--History--20th century--Sources.
Trentino-Alto Adige (Italy)--History.
Tyrol (Austria)--History--20th century--Sources.
Tyrol (Austria)--History.
World War, 1914-1918--Austria--Tyrol--History--Sources.
World War, 1914-1918--Austria--Tyrol.
World War, 1914-1918--Italy--Trentino-Alto Adige--Sources.
World War, 1914-1918--Italy--Trentino-Alto Adige.
Princeton subject headings:
Tyrol (Austria)--History--20th century--Sources.
World War, 1914-1918--Austria--Tyrol--History--Sources.