Chŏngchʻi kyŏngjehak
Subtitle: Kyŏngje Chŏngmun Hakkyo yong
By: [pʻyŏnjip kyŏm parhaengso Kyoyuk Tosŏ Chʻulpʻansa].
Edition: Chʻopʻan.
Publisher: Tong Chʻulpʻansa, <1959-
Published: 1959
Place of publication: Pʻyŏngyang
Language: kor
Number of pages: 23