Columbia subject headings:
Friendship--Iceland--History--To 1500.
Friendship--Norway--History--To 1500.
Iceland--History--To 1262.
Iceland--Relations--Norway.
Norway--History--1030-1397.
Norway--Relations--Iceland.
Harvard subject headings:
Electronic books.
Friendship--Iceland--History--To 1500.
Friendship--Norway--History--To 1500.
Iceland--History--To 1262.
Iceland--Relations--Norway.
Norway--History--1030-1397.
Norway--Relations--Iceland.
Princeton subject headings:
Friendship--Iceland--History--To 1500.
Friendship--Norway--History--To 1500.
Iceland--History--To 1262.
Iceland--Relations--Norway.
Norway--History--1030-1397.
Norway--Relations--Iceland.