Columbia subject headings:
Harvard subject headings:
Austria--Boundaries--Italy.
Austria. Bundesheer--History.
Border patrols--Austria--Tyrol--History.
Border patrols--Italy--Trentino-Alto Adige--History.
Border security--Austria--Tyrol--History.
Border security--Italy--Trentino-Alto Adige--History.
Italy--Boundaries--Austria.
Trentino-Alto Adige (Italy)--History, Military.
Princeton subject headings:
Austria--Boundaries--Italy.
Austria. Bundesheer--History--20th century.
Border patrols--Austria--History--20th century.
Italy--Boundaries--Austria.
Trentino-Alto Adige (Italy)--History--20th century.