An introductory puzzle and problem book for elementary school students to develop intelligence. - Title: Genius Brain Drill: Introductory Edition - Author: Tomoyuki Wada - Target age: Elementary school students - Contents: Puzzles and problem sets to develop intelligence - ISBN: 978-4-564-47970-4 - Price: 1600 yen Thank you for viewing. There is no writing or tearing. It has been stored in almost unused condition. This is a used item, so please consider this if you are not concerned about used condition.