Columbia subject headings:
Gansu Corridor (China)--History--Congresses.
Silk Road--History--Congresses.
Silk Road--Intellectual life--Congresses.
Harvard subject headings:
China--Civilization--221 B.C.-960 A.D.--Congresses.
Gansu Corridor (China)--Congresses.
Silk Road--Civilization--Congresses.
Silk Road--Intellectual life--Congresses.
Princeton subject headings:
China--Civilization--221 B.C.-960 A.D.--Congresses.
Silk Road--Civilization--Congresses.