Title: Chunghakkyo haksaeng ŭi yŏga sŏnyong ŭl wihan chosa yŏnʾgu : kogyo pʻyŏngjunhwa palpʻyo hu ŭi chunghakkyo sam hangnyŏn haksaeng ŭl chungsim ŭro /
Authors: Chʻoe, Pyŏng-gi.
Year: 1973
Subjects: School recess breaks.; Educational counseling Korea.