※ Additional explanations and images are available. Please take a look. Doraemon's Science World, complete 4-volume set, content that makes learning science fun. [Dinosaurs and Lost Animals] [Mysteries of Plants and Animals] [The World of Robots] [Mysteries of Light and Sound] Thank you for viewing. ※ Regarding "Mysteries of Light and Sound," the condition is not very good overall, with a crease and tape marks on the hardcover. Therefore, please consider it as a bonus. ※ Only in "Mysteries of Plants and Animals," there is a child's name written (in ballpoint pen) on the main body of the book, with the cover removed (image available). I have lightly erased it with an eraser, but it has not been completely removed. Please understand and consider this before purchasing, as it will be sent in its current condition. - Set Contents: Doraemon's Science World, complete 4-volume set - Themes: Dinosaurs, Plants, Light & Sound, Robots - Illustration Design: Colorful cover design - Content: Information and illustrations related to science - Language: Japanese