Columbia subject headings:
Harvard subject headings:
Gothic Line (Italy)
Italy--History--German occupation, 1943-1945.
United States. Office of Strategic Services.
World War, 1939-1945--Campaigns--Italy, Central.
World War, 1939-1945--Secret service--United States.
World War, 1939-1945--Underground movements--Italy, Central.
Princeton subject headings:
United States. Office of Strategic Services--History.
World War, 1939-1945--Campaigns--Italy.
World War, 1939-1945--Secret service--United States.
World War, 1939-1945--Underground movements--Italy.