Hanʼgŭl kigyehwa undong
By: Song Hyŏn chiŭm.
Edition: Chʻopʻan
Publisher: Inmul Yŏng̕uso
Published: 1982
Place of publication: Sŏul Tʻŭkpyŏlsi
Language: kor
Number of pages: 455
Subjects: Korean language -- Data processing -- History; Typewriters, Korean -- History