Sobija poho haengjŏng ŭi chedojŏk kaesŏn pangan yŏnʼgu.
Series: Chŏngchʻaek yŏnʼgu ; che 3-ho
Publisher: Hanʼguk Sanŏp Kyŏngje Yŏnʼguwŏn
Published: 1979
Language: kor
Number of pages: 585