Columbia subject headings:
Hamrin Basin (Iraq)--Antiquities--Congresses.
Iraq--Antiquities--Congresses.
Prehistoric peoples--Iraq--Hamrin Basin--Congresses.
Harvard subject headings:
Antiquities, Prehistoric--Iraq--Hamrin Basin--Congresses.
Excavations (Archaeology)--Iraq--Congresses.
Hamrin Basin (Iraq)--Antiquities--Congresses.
Hamrin Basin (Iraq)--Congresses.
Iraq--Antiquities--Congresses.
Prehistoric peoples--Iraq--Hamrin Basin--Congresses.
Ubaid culture--Iraq--Congresses.
Princeton subject headings:
Iraq--Antiquities.