Columbia subject headings:
Harvard subject headings:
Contracts--China--Tʻu-lu-fan hsien--History--Sources.
Dunhuang manuscripts--Catalogs.
Turpan Xian (China)--History--Sources.
Princeton subject headings:
Commercial law--China--History--Sources.
Contracts--China.
Dunhuang manuscripts--Catalogs.
Silk Road--History--Sources.
Turpan Xian (China)--History--Sources.