忠北砂防七十年史
By: [pʻyŏnchʻan Chʻungchʻŏng-pukto Chʻisan Saŏpso ; chippʻilcha Kim Hong-ŭn]
Publisher: Chʻungchʻŏng-pukto
Published: 1991
Place of publication: Chʻungchʻŏng-pukto
Language: kor
Number of pages: 393
Subjects: Soil conservation
Other titles: Chʻungbuk sabang chʻilsimnyŏnsa; Chʻungbuk sabang 70-yŏnsa