"Graph Problems Special Seminar: Preparation for Public Integrated Junior and Senior High Schools - Completed in 24 Days!" Isao Yoshihara Price: ¥1000 There were traces of calculations in pencil outside the answer boxes in a few places, which I have erased. However, there may be some remaining marks, but I believe it will not affect usage. I would appreciate it if you would consider this item with the understanding that it is a used product. #IsaoYoshihara #Isao_Yoshihara #Book #Society/Social Welfare"