Columbia subject headings:
Geraldus, abbas Maioris Monasterii Turonensis.
Orvieto (Italy)--History.
Harvard subject headings:
Geraldus, abbas Maioris Monasterii Turonensis.
Orvieto (Italy)--History.
Princeton subject headings:
Geraldus, abbas Maioris Monasterii Turonensis.
Orvieto (Italy)--History.