Columbia subject headings:
Harvard subject headings:
Berlin Region (Germany)--Antiquities--Congresses.
Excavations (Archaeology)--Germany--Berlin Region--Congresses.
Princeton subject headings:
Berlin (Germany)--Antiquities.
Berlin (Germany)--Buildings, structures, etc.
Berlin Region (Germany)--Antiquities.
Excavations (Archaeology)--Germany--Berlin Region.
Excavations (Archaeology)--Germany--Berlin.
Historic buildings--Germany--Berlin Region.