Columbia subject headings:
Archaeology--Eurasia.
Eurasia--Antiquities.
Steppes--Eurasia--History.
Harvard subject headings:
Archaeology--Eurasia.
Eurasia--Antiquities.
Steppes--Eurasia--History.
Princeton subject headings:
Archaeology--Eurasia.
Eurasia--Antiquities.
Steppes--Eurasia--History.