Columbia subject headings:
Harvard subject headings:
Germans--Spain--History--20th century.
Germany--Foreign relations--1933-1945.
Germany--Foreign relations--Spain.
Hitler, Adolf, 1889-1945
Spain--Foreign relations--Germany.
Spain--History--Civil War, 1936-1939--Participation, German.
World War, 1939-1945--Causes.
Princeton subject headings:
Germans--Spain--History--20th century.
Germany--Foreign relations--1933-1945.
Germany--Foreign relations--Spain.
Hitler, Adolf, 1889-1945.
Spain--Foreign relations--Germany.
Spain--History--Civil War, 1936-1939--Participation, German.
World War, 1939-1945--Causes.