Columbia subject headings:
Harvard subject headings:
Excavations (Archaeology)--Germany
Germany--Antiquities.
Pottery, Medieval--Germany.
Princeton subject headings:
Aachen Region (Germany)--Antiquities.
Cologne Region (Germany)--Antiquities.
Excavations (Archaeology)--Germany--Aachen Region.
Excavations (Archaeology)--Germany--Cologne Region.
Pottery, Medieval--Germany--Aachen Region.
Pottery, Medieval--Germany--Cologne Region.