Columbia subject headings:
Harvard subject headings:
Crowns--Korea.
Excavations (Archaeology)--Korea.
Koguryŏ (Kingdom)--Antiquities.
Koguryŏ (Kingdom)--Civilization.
Princeton subject headings:
Crowns--Korea--History.
Headgear--Korea--History.
Koguryŏ (Kingdom)--Politics and government.