Columbia subject headings:
Asia, Central--Civilization.
Asia, Central--History.
Harvard subject headings:
Eurasia--Civilization.
Eurasia--History.
Golden, Peter B.
Khazars--Eurasia--History.
Mongols--Eurasia--History.
Turkic languages--Eurasia--History.
Turkic peoples--Eurasia--History.
Princeton subject headings:
Asia, Central--Civilization.
Asia, Central--History.
Golden, Peter B.