Title: Chogyŏng kyehoek ŭl wihan chŏ kurŭngji ŭi paesu pʻaetʻŏn pyŏl tʻoyang tʻŭksŏng ŭi chosa pullyu e kwanhan yŏnʼgu
First published: 1976
LC classification: MLCMK 2006/00435 (S)