Tetsuryokukai (Iron-Green Society) Common Test Chemistry Exercises ・Sessions 1-9 ・2015-2019 Supplementary Exams Center Chemistry Exercises ・2020 Supplementary Exam Course Quiz No. 1-10 The problem set booklets are about 20 pages each. Calculation problems include Tetsuryokukai's original explanations. Writing in pencil is present. Please understand that these are used items before purchasing. Returns are not accepted after purchase.