A 7-book set of Doraemon educational manga. - Title: Doraemon Tankyu World: Science World - Number of volumes: 7-book set - Price: From 850 yen - Publisher: Shogakukan Some were purchased used, and some were purchased new. Some books have scratches and folds, but there are also some with the obi (paper band) still attached and in good condition. These are used items stored at home, so please understand this before purchasing. You can purchase without leaving a comment.