Columbia subject headings:
Harvard subject headings:
Asia, Central--Antiquities--Congresses.
Asia, Central--Civilization--Congresses.
China, Northwest--Antiquities--Congresses.
China, Northwest--Civilization--Congresses.
Princeton subject headings:
Asia, Central--Antiquities--Congresses.
Asia, Central--Civilization--Congresses.
China, Northwest--Antiquities--Congresses.
China, Northwest--Civilization--Congresses.