TY  - BOOK
ED  - Educational Broadcasting System
TI  - The joy of knowledge Hangeul that we didn't know 5 lectures: Hangeul that changed the history of letters
T2  - EBS Contents With education culture and information 
CY  - Mapo-gu, Seoul : 
PB  - Publishing Contents Center, 
KW  - Korean Education
KW  - Training & development
N1  - leading educational change
ER  -