SSŏul ŭi sanSŏul ŭi sande Kak-sun NaMateriasMountainsDescription and travelEdiciones (1)Sŏul ŭi san (1997)Sŏul T'ŭkpyŏl Sisa P'yŏnch'an Wiwŏnhoe · korMás obras de Kak-sun NaSSŏul ŭi sanSŏul ŭi sanUUnhyŏn'gung kwa Hŭngsŏn Taewŏn'gunUnhyŏn'gung kwa Hŭngsŏn Taewŏn'gunSSŏul ŭi nŭngmyoSŏul ŭi nŭngmyo