Columbia subject headings:
Harvard subject headings:
Greece--History--Occupation, 1941-1944.
World War, 1939-1945--Underground movements--Greece.
World War, 1939-1945--Underground movements--Yugoslavia.
Yugoslavia--History--Axis occupation, 1941-1945.
Princeton subject headings:
Greece--History--Occupation, 1941-1944.
World War, 1939-1945--Underground movements--Greece.
World War, 1939-1945--Underground movements--Yugoslavia.
Yugoslavia--History--Axis occupation, 1941-1945.