Title: Tʻokki e issŏsŏ pusin kyŏltʻak e ttarŭnŭn sunhwan paekhyŏlgu su ŭi isang e kwanhan yŏnʼgu oe pu nonmun 3-pʻyŏn
First published: 1971
LC classification: MLCMK 2006/00043 (R)