Columbia subject headings:
Harvard subject headings:
Borderlands--Norway--History--To 1500.
Borderlands--Scotland--History--To 1500.
Norway--Foreign relations--Scotland.
Orkney (Scotland)--Politics and government.
Orkney (Scotland)--Social conditions.
Orkney (Scotland)--Strategic aspects--History.
Peace-building--Norway--History--To 1500.
Peace-building--Scotland--History--To 1500.
Scotland--Foreign relations--Norway.
Princeton subject headings:
Borderlands--Norway--History--To 1500.
Borderlands--Scotland--History--To 1500.
Norway--Foreign relations--Scotland.
Orkney (Scotland)--Politics and government.
Orkney (Scotland)--Social conditions.
Orkney (Scotland)--Strategic aspects--History.
Peace-building--Norway--History--To 1500.
Peace-building--Scotland--History--To 1500.
Scotland--Foreign relations--Norway.