Columbia subject headings:
Harvard subject headings:
Korea--History--Chosŏn dynasty, 1392-1910.
Social mobility--Korea--History.
Social status--Korea--History.
Social structure--Korea--History
Princeton subject headings:
Korea--History--Chosŏn dynasty, 1392-1910.
Social mobility--Korea--History.
Social status--Korea--History.
Social structure--Korea--History.