Chadongchʻa kyotʻong haengjŏng ŭi kaesŏn ŭl wihan chosa pogosŏ
Publisher: Haengjŏng Kaehyŏk Chosa Wiwŏnhoe
Published: 1969
Place of publication: [Sŏul]
Language: kor
Number of pages: 36
Subjects: Traffic safety