Columbia subject headings:
Neutrality--Scandinavia.
Scandinavia--Foreign relations.
Scandinavia--History.
Scandinavia--Neutrality.
Harvard subject headings:
Neutrality--Scandinavia.
Scandinavia--Foreign relations.
Scandinavia--History.
Princeton subject headings:
Scandinavia--Foreign relations.
Scandinavia--History.
Scandinavia--Neutrality.