"New Course Chart Style Basic Mathematics C" Price: 1300 yen + tax Since I was in the humanities, I hardly used this reference book. (As far as I remember, it's unused, and I've confirmed that there are no writings throughout, but just in case, I'll say "hardly used.") However, I would appreciate it if you could purchase it with the understanding that it is a used item. Also, please be aware that it is stored at home. I hope it will be helpful for those who are studying hard ^^ #book