Seller: liu xing, Nanjing, JS, China
paperback. Condition: New. Language:Chinese.Paperback. Pub Date: 2015-12-15 Pages: 30 Publisher: China Railway Publishing House book was imported from Germany-based children's science experiment to work. The book records the story takes place between the cute aliens Willoughby and his friend Tom. Tara three hero through a variety of interesting experiments with fun questions and answers for the Willoughby and explain to the propagation of light. reflection and refraction. completed the light of these three natural phen. Seller Inventory # CY030058