版权声明

数学ガールの秘密ノート/丸い三角関数

Sugaku Girl no Himitsu Note Marui Sankakukansu

Copyright © 2014 Hiroshi Yuki

Originally published in Japan by SB Creative Corp.

Chinese (in simplified character only) translation rights arranged with SB Creative Corp., Tokyo through CREEK & RIVER Co., Ltd.

All rights reserved.