Columbia subject headings:
Cologne (Germany)--Antiquities.
Excavations (Archaeology)--Germany--Cologne.
Stift St. Severin (Cologne, Germany)
Harvard subject headings:
Cologne (Germany)--Antiquities.
Excavations (Archaeology)--Germany--Cologne.
Stift St. Severin (Cologne, Germany)
Princeton subject headings:
Cologne (Germany)--Antiquities.
Excavations (Archaeology)--Germany--Cologne.
Stift St. Severin (Cologne, Germany)