Columbia subject headings:
Austria--Church history.
Bavaria (Germany)--Church history.
Regensburg (Germany)--Church history.
Harvard subject headings:
Austria--Church history.
Bavaria (Germany)--Church history.
Regensburg (Germany)--Church history.
Princeton subject headings:
Austria--Church history.
Bavaria (Germany)--Church history.
Christian antiquities--Germany (West)--Regensburg.
Church history--Primitive and early church, ca. 30-600.
Regensburg (Germany)--Church history.