| 摘要 |
PROBLEM TO BE SOLVED: To enable people of all generations as a customer to conveniently and amusingly select a book desired to be read by their own children and grandchildren or students in the case of school. SOLUTION: A customer can confirm subliminal consciousness about book selection on an on-line bookstore by utilizing a new classifying method of children's books (referred to diagram on another sheet). Also, contents of books are easier to grasp by characterizing each item of this classification.
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