Columbia subject headings:
Corsica (France)--Economic conditions.
Corsica (France)--Social conditions.
Gregory I, Pope, approximately 540-604.
Sardinia (Italy)--Economic conditions.
Sardinia (Italy)--Social conditions.
Harvard subject headings:
Corsica (France)--Economic conditions.
Corsica (France)--Social conditions.
Gregory I, Pope, approximately 540-604
Sardinia (Italy)--Economic conditions
Sardinia (Italy)--Social conditions
Princeton subject headings:
Corsica (France)--Economic conditions.
Corsica (France)--Social conditions.
Gregory I, Pope, approximately 540-604.
Sardinia (Italy)--Economic conditions.
Sardinia (Italy)--Social conditions.