This is a textbook from the Mathematics I A II B C series, published by Kenkyusha. I have not checked for writing inside, but I believe there is almost none. The book shows visible signs of use, so I have marked it as having scratches and stains. The names on the I and B textbooks were cut out because they were written in a place that could not be erased (not on the cover or spine). There is no problem with the content. Price reduction negotiable △, Immediate purchase ○ Please comment if you have any questions or requests.