Columbia subject headings:
Bobbio (Italy)--Church history.
Bobbio (Italy)--History.
Catholic Church--Italy--Bobbio--History.
Catholic Church. Diocese of Bobbio (Italy)--History.
Harvard subject headings:
Bobbio (Italy)--Church history.
Bobbio (Italy)--History.
Catholic Church--Italy--Bobbio--History.
Catholic Church. Diocese of Bobbio (Italy)--History.
Princeton subject headings: