"New Calculus, Volume 1" Ryosuke Nagaoka / Hiroshi Watanabe / Naritoshi Yazaki Price: ¥2200 There is damage on the back cover. The book itself has been hardly used, so it's in a clean condition without any stains or writing. However, it is a used item that was carried around for commuting. Please refrain from purchasing if you are at all concerned.