Columbia subject headings:
Korea--Civilization--1392-1910.
Korea--History--Chosŏn dynasty, 1392-1910.
Sejong, King of Korea, 1397-1450.
Harvard subject headings:
Korea--Civilization--1392-1910.
Korea--History--Chosŏn dynasty, 1392-1910.
Sejong, King of Korea, 1397-1450
Princeton subject headings: