Columbia subject headings:
Harvard subject headings:
Valdesi Valleys (Italy)
Waldensian Valleys.
World War, 1939-1945--Underground movements--Italy--Waldensian Valleys.
World War, 1939-1945--Underground movements--Waldensian Valleys.
Princeton subject headings:
Waldensian Valleys.
World War, 1939-1945--Underground movements--Waldensian Valleys.