Columbia subject headings:
Germany--Foreign relations--Yugoslavia.
World War, 1939-1945--Diplomatic history.
World War, 1939-1945--Yugoslavia.
Yugoslavia--Foreign relations--Germany.
Yugoslavia--History--1918-1945.
Harvard subject headings:
World War, 1939-1945--Yugoslavia.
Yugoslavia--History--Axis occupation, 1941-1945.
Princeton subject headings:
World War, 1939-1945--Campaigns--Yugoslavia.
World War, 1939-1945--Yugoslavia.
Yugoslavia--History--Axis occupation, 1941-1945.