Title: Yuhak i onŭl ŭi munje e tap ŭl chul su innŭn'ga / Na Chong-sŏk, Pak Yŏng-do, Paek Yŏng-sŏ, Chŏng Il-gyun chiŭm
Subjects: Neo-Confucianism, Civilization, East Asian influences, Confucian influences