Columbia subject headings:
Harvard subject headings:
Cities and towns, Ancient--Iraq--Congresses.
Erech (Extinct city)--Civilization--Congresses.
Erech (Extinct city)--Congresses.
Excavations (Archaeology)--Iraq--Erech (Extinct city)--Congresses.
Uruk culture--Congresses.
Princeton subject headings:
Conference papers and proceedings.
Erech (Extinct city)--Antiquities--Congresses.
Uruk culture--Congresses.