Tetsuryokukai (Iron Green Society) 2021 Edition High School 3 Science Mathematics Entrance Exam Mathematics Problem Collection Part 1 To protect it from water damage, it will be placed in a clear pocket and shipped via Rakuraku Mercari. New, unused item Available for immediate purchase If you wish to purchase multiple items, or if you are looking for Tetsuryokukai reference books, please leave a comment. If you have any other questions or concerns, please leave a comment.