This is the Survival Series from the world of 〇〇. A set of 7 books. [Contents] Survival in the World of Dinosaurs 1 Survival in the World of Dinosaurs 2 Survival in the World of Insects 1 (no cover) Survival in the World of Insects 2 Survival in the World of Insects 3 Survival in the Deep Sea Survival in the Rapids This is a popular survival series for children. My child said they couldn't borrow it from the library, so I bought them little by little. My child read these repeatedly, so they show considerable wear and tear. There are scratches, stains, and scuffs. (Please refer to the photos) * The cover is taped. As these are used items, there may be stains and scratches that are not visible in the photos. Please consider this before purchasing. * Please refrain from purchasing if you are concerned about minor details. Recommended for those who want their children to learn various knowledge while having fun, those who want to create a children's book corner in facilities where children gather, and those who like the Survival Series. Thank you for looking.