A reference book that covers all high school mathematics formulas. - Title: Focus High School Mathematics Formula Collection - Content: A reference book collecting high school mathematics formulas - Language: Japanese - Cover Design: Simple design - Binding: Softcover Thank you for looking. There are no writings or markings. It has not been used, so I believe it is in relatively clean condition, but there is a scratch in one place as shown in the 3rd image. Please refrain from purchasing if you are sensitive. Thank you for your understanding of used items.