Science reference book for learning logical thinking useful for junior high school entrance exams. - Title: Junior High School Entrance Exams: The Strongest Science, Revised 4th Edition, Learned Through Logic - ISBN: 978-4-7539-3449-2 - Price: 1500 yen Because it's in a question-and-answer format, I used to read it or quiz myself during commutes or spare time. The book's size (18.5cm x 13cm) is also small and easy to carry around. I seemed to be soothed by the seemingly unrelated illustrations that occasionally appeared. There are no writings or folded pages, and it's in a clean condition. Thank you for looking.