Columbia subject headings:
Asia, Central--Civilization.
Asia, Central--History.
Asia, Central--Population.
Harvard subject headings:
Asia, Central--History.
Loulan (Extinct city)
Xinjiang Uygur Zizhiqu (China)--History.
Princeton subject headings:
Asia, Central--History.
Loulan (Extinct city)
Xinjiang Uygur Zizhiqu (China)--History.