① Mathematics I+A from Basics, a new curriculum textbook from Chart-shiki. ② Standard High School Problem Collection There are a few "ok" markings on some pages of ② (please check the image). They are not expected to hinder the solving of problems. - Title: Mathematics I+A from Basics - Editor: Chart Research Institute - Price: 2255 yen - ISBN: 978-4-410-10578-4 - Series: Chart-shiki - Publisher: Suken Shuppan Thank you for looking.