GNOBEL 4 Years G Brain Training (5 books set)

GNOBEL 4 Years G Brain Workout 21 Post Subject(7)-Partitional Subject- 22 Post Subject(8)-Average Subject- 23 yen and shape(1)-Longness- 24 yen and shape(2)-Supply area- 25 square volume and water depth about 9 years ago because I bought the old version. I have no problems with copying and using it, but it's open, folded, and a little dirty. There's a part I'm checking with a pencil on the number, but it's wiped out with rubber. I'm sorry if you've forgotten to delete. If you understand for home storage, please.