Songgan sago
By: [chŏja Chŏng Yong-hwan].
Publisher: Songgan Chŭng Yong-hwan Sŏnsaeng Munʼgo Parhaeng Wiwŏnhoe
Published: 1978
Place of publication: Chʻungchʻŏng Ŭmsŏng-gun
Language: kor
Number of pages: 146