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As long as the title of each book remains the same, will their ISBN numbers always be unique? If the book is revised or revised, does the ISBN number change?
According to the Provisions on Prohibiting Reuse of Chinese Standard Book Number 1

In the following cases, the ISBN should be used separately:

1, different binding forms of the same book (hardcover, paperback, etc. );

2. Different editions of the same book (revised edition, annual edition);

3. Different folio books with the same content;

4. Books with the same content and different text categories.

In other words, change.