This is a set of 13 volumes from the Bone Bone Saurusu series. It's a fun picture book for children. - Series Name: Bone Bone Saurusu Thank you for looking. 4: Adventure! Pyramid of the Abara Desert 5: Tyranno Baby Flies in the Sky! 10: Tyranno Baby and the Four Magicians 12: Bone Bone Samurai of the Ashura Fortress 14: Decisive Battle! Garuda vs. Hydra Part 1 15: Decisive Battle! Garuda vs. Hydra Part 2 16: Tyranno Baby and the Mysterious Giant Meteor 18: Showdown! The Fearsome Saber-toothed Tiger 19: The Giant of Light and the Dragon of Darkness 20: Challenge! The Last Bone Bone Seven Wonders 21: Revival! The Legendary Fire Tyranno Part 1 23: Protect! The Mammoth's Land 24: Stegosaurus of the Lost Forest Many volumes do not have covers, and some have minor scratches on the cover, but the inside of all of them is very clean. Please consider this before purchasing!