Chʻŏllima kisu tokpon
Publisher: Chae Ilbon Chosŏnin Kyojigwŏn Tongmaeng; Chʻulpʻanso Hagu Sŏbang
Published: 1964
Place of publication: Tonggyŏng
Language: kor
Number of pages: 412
Subjects: Labor productivity
Notes: Reprint. Originally published: Pʻyŏng-yang : Chigŏp Tongmaeng Chʻulpʻansa, 1963.