Haengjŏnghak wŏllon
Subtitle: haengjŏng chʻegye ŭi iron chŏngae
By: Yi U-hyŏn chŏ
Publisher: Hanʼguk Sabŏp Haengjŏng Hakhoe
Published: 1964
Place of publication: Sŏul
Language: kor
Number of pages: 560