Columbia subject headings:
Sumerian language--Texts.
Ur (Extinct city)
Working class--Iraq--Ur (Extinct city)--History--Sources.
Harvard subject headings:
Cuneiform inscriptions, Akkadian--Iraq--Lagash (Extinct city)
Sumerian language--Texts.
Ur (Extinct city)
Working class--Iraq--Ur (Extinct city)--History--Sources.
Princeton subject headings:
Sumerian language--Texts.
Ur (Extinct city)
Working class--Iraq--Ur (Extinct city)--History--Sources.