This is a set of 8 books: Birds, Space, Dinosaurs, Humans, Breeding and Observation, Science Experiments, Flowers, and Dangerous Creatures. Books 17 and 19 come with DVDs, while book 21 does not. Book 5 (Birds) has a torn cover, but the book itself and the contents are in good condition. Original price: 2,000 yen each These are used books, so there is some wear and tear, such as creasing, but there are no markings inside and they are perfectly readable. Please understand that these are amateur inspections and have been stored at home. Thank you for looking. No pets, no smokers. Immediate purchase is welcome.