Columbia subject headings:
Harvard subject headings:
China--History--221 B.C.-960 A.D.--Historiography.
Koguryŏ (Kingdom)--Study and teaching--China.
Korea--History--To 935--Historiography.
Korea--History--To 935--Study and teaching--China.
Princeton subject headings:
Koguryŏ (Kingdom)--History.
Korea--History--To 935--Historiography.