A picture book supervised by a professor at the Graduate School of Education, University of Tokyo, on the theme of "Peek-a-Boo" to raise smart children. Because it has many pages, it's a picture book that's satisfying to read. Since parents read it aloud, it's in relatively good condition with no noticeable stains, tears, or scribbles. - Title: Peek-a-Boo Picture Book - Author: Akio Kashiwara I'm also selling many other picture books, so please take a look if you'd like. Thank you for looking.