Kugyŏk Kugŭppang ŏnhae

Published 2003

Kugyŏk Kyosik chubopŏp /

by Yi, Sun-ji, -1465, Yi, Sun-ji, -1465, Yi, Sun-ji, -1465, Kim, Sŏk-che (Astronomer), Kim, Sŏk-che, active 1459
Published 2017

Kugyŏk Chuhak siryong /

by Pyŏn, Ŏn-jŏng, Pyŏn, Ŏn-jŏng, Pyŏn, Ŏn-jŏng
Published 2017

Yŏkchu kugŭppang ŏnhae /

Published 2003

Yŏkchu Nammyŏng chip ŏnhae

Published 2002

Yŏkchu Ŏje kyŏngminŭm ; Ŏje paekhaengwŏn /

by Yŏngjo, King of Korea, 1694-1776
Published 2021