Sahoe kaebal kyehoek ŭl wihan kibon chosa
Publisher: [Kŏndae pusŏl Hanʼguk Ŭngyong Sahoe Kwahak Yŏnʼguso]
Published: 1969
Place of publication: [Sŏul]
Language: kor
Number of pages: 418
Subjects: Social problems