Columbia subject headings:
Harvard subject headings:
Chŏngjo, King of Korea, 1752-1800--Knowledge and learning.
Chŏngjo, King of Korea, 1752-1800--Knowledge--Korean philology.
Princeton subject headings:
Chŏngjo, King of Korea, 1752-1800--Knowledge and learning.
Chŏngjo, King of Korea, 1752-1800--Knowledge--Korean philology.