Revised and Enlarged Edition of "Chart Shiki Basic Mathematics I + A" By Chart Research Institute Price: ¥1,820 + tax Revised and Enlarged Edition of "Chart Shiki Basic Mathematics II + B" By Chart Research Institute Price: ¥2,050 + tax Revised and Enlarged Edition of "Chart Shiki Basic Mathematics III" By Chart Research Institute Price: ¥1,600 + tax #ChartResearchInstitute #Book #AoChart (Blue Chart) These books were used until last year. The names written on the back covers have been blacked out. There are some writings and markings. We look forward to your purchase, understanding that these are used items.