DVDs for Basic Chemistry and General Biology. Never used. The DVDs are still sealed, but please understand that they have been handled by someone else. They arrived before university entrance, but the owner never used them and went to a different university. - Title: Basic Chemistry - Title: General Biology (Biology ①) - Media Type: DVD - Playback: Playable on DVD player or PC - Screen Ratio: 16:9 - Video Format: MPEG-2 Thank you for looking.