This is a set of 40 books. *Please see the image for the titles. My children read these books a lot and gained a wealth of knowledge. I think they are very good books. I am selling them because my children have grown up. *As these are used books, there may be signs of wear, yellowing, scratches, and other damage, but there is no problem with reading them. I think the books are in relatively good condition as my children are careful readers. *We carefully inspect the books, but please understand that we may miss something. Please refrain from purchasing if you are sensitive to used books. Please purchase with your understanding. Books BOOK Kagaku-ru BOOK (Science Adventure Series) Bundle Sale Inventions Experiments History Survival ・Price includes shipping. ・Immediate purchase is welcome. ・Shipping will be done within 1-2 days. ・Please refrain from purchasing if you are sensitive to used items or home storage.