Earth's 4.6 billion years, 10 major events - Formation of the supercontinent Pangea /
Earth's 4.6 billion years, 10 major events - Formation of the supercontinent Pangea /
Educational Broadcasting System.
- Class-e (1).
- Mapo-gu, Seoul : Publishing Contents Center,
- Sound, Color : 1 videodisc ; 4 3/4 in.
- approximately 27 min.
- EBS Contents With education culture and information. .
leading educational change.
Korean Education.
Training & development
leading educational change.
Korean Education.
Training & development