Columbia subject headings:
Harvard subject headings:
China--Genealogy.
China--History--Yuan dynasty, 1260-1368.
Mongols--History
Princeton subject headings:
China--Genealogy.
China--History--To 1643--Sources.
China--History--Yuan dynasty, 1260-1368.
Mongols--History.
Sung, Lien, 1310-1381. Yüan-shih.