Columbia subject headings:
Christianity--Scandinavia.
Europe--History--476-1492.
Scandinavia--Civilization.
Vikings.
Harvard subject headings:
Christianity--Scandinavia.
Europe--History--476-1492.
Scandinavia--Civilization.
Vikings.
Princeton subject headings:
Christianity--Scandinavia.
Europe--History--476-1492.
Scandinavia--Civilization.
Vikings.