Columbia subject headings:
Harvard subject headings:
Ansgar, Saint, Archbishop of Hamburg and Bremen, approximately 801-865.
Europe, Northern--Church history.
Haithabu (Extinct city)
Missions--Germany, Northern.
Missions--Scandinavia.
Princeton subject headings:
Ansgar, Saint, Archbishop of Hamburg and Bremen, approximately 801-865.
Germany, Northern--Church history.
Missions--Germany, Northern.
Missions--Scandinavia.
Scandinavia--Church history.