Title: Chunghakkyo "hwanʼgyŏng" kyokwa ŭi kyosu, haksŭp mit pʻyŏngka pangbŏp yŏnʼgu
First published: 1994
Subjects: Study and teaching (Secondary), Grading and marking (Students), Human ecology, Educational surveys
LC classification: GF28.K6 N36 1994