Columbia subject headings:
Harvard subject headings:
Art, German--Germany--Regensburg--Congresses.
Regensburg (Germany)--Antiquities, Roman--Congresses.
Regensburg (Germany)--Intellectual life--Congresses.
Princeton subject headings:
Art, German--Germany--Regensburg--Congresses.
Regensburg (Germany)--Antiquities, Roman--Congresses.
Regensburg (Germany)--Intellectual life--Congresses.