Yŏng-sik Kim
1947
Chŏng Yag-yong sasang sok ŭi kwahak kisul
Chŏng Yag-yong ŭi munjedŭl
Chungguk kwa Chosŏn, kŭrigo Chunghwa
Han'guk chŏnt'ong kwahak ŭi paegyŏng
Hanʼguk ŭi kwahak munhwa
Inmunhak kwa kwahak
Kŭnhyŏndae Hanʼguk sahoe ŭi kwahak
Kwahaksa kaeron
Na ŭi sam na ŭi saenggak
Taehak kaehyŏk ŭi kwaje wa panghyang
Yŏksa sok ŭi kwahak
유가전통과과학