Columbia subject headings:
Harvard subject headings:
Korea--History--Chosŏn dynasty, 1392-1910.
Korea--Politics and government--1392-1910.
Petition, Right of--Korea--History.
Political ethics--Korea--History.
Princeton subject headings:
Korea--Politics and government--1392-1637.
Petition, Right of--Korea--History.
Political ethics--Korea--History.