Columbia subject headings:
Harvard subject headings:
Chosŏn wangjo sillok.
Korea--Civilization--1392-1910.
Korea--History--Chosŏn dynasty, 1392-1910--Anecdotes.
Science--Korea--History.
Princeton subject headings:
Anecdotes.
Chosŏn wangjo sillok.
Korea--Civilization--1392-1910.
Korea--History--Chosŏn dynasty, 1392-1910--Anecdotes.
Science and civilization.
Science--Korea--History.