Tonghak chi
Subtitle: Kwŏn 1-4
By: Yu Sang-gŭn, Yi Pŏm-uk (Chosŏn) tŭngpʻyŏn
Edition: Sinyŏn hwalcha pʻan
Publisher: [publisher not identified]
Published: 1920
Place of publication: [Korea]
Language: kor
Subjects: Chabu; Tonghakkyoryu