Columbia subject headings:
Harvard subject headings:
Sardinia (Italy)--History--456-1297.
Sardinian language--to 1500.
Princeton subject headings:
Basilica romanica di Santa Maria di Bonarcado--History--Sources.
Sardinia (Italy)--History--456-1297--Sources.
Sardinian language--Dialects--Italy--Logudoro--Texts.
Sardinian language--To 1500--Sources.