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