Columbia subject headings:
Netherlands--Foreign relations.
Netherlands--Neutrality.
World War, 1939-1945--Diplomatic history.
Harvard subject headings:
Netherlands--Foreign relations.
Neutrality--Netherlands.
World War, 1939-1945--Diplomatic history.
World War, 1939-1945--Netherlands.
Princeton subject headings:
Netherlands--Foreign relations.
Netherlands--Neutrality.
World War, 1939-1945--Diplomatic history.
World War, 1939-1945--Netherlands.