This is a set of two books. "Kazu to Suuji no Densha Jiten 2" (Numbers and Trains Encyclopedia 2): It was a favorite, so there are some stains and folds. "Chanto Shuchu Dekiru Ko no Nou wa 10-sai made ni Kimaru" (A Child's Brain That Can Concentrate is Decided by Age 10): Read once and then stored. - Title: Kazu to Suuji no Densha Jiten 2 - Author: Takushi Kunitaki - Publisher: Shikaku Design Kenkyujo - Price: 1200 yen - ISBN: 978-4-88108-254-6 "Chanto Shuchu Dekiru Ko no Nou wa 10-sai made ni Kimaru" Shigeyuki Hayashi Price: ¥1200 Thank you for looking.