Steve Bennett wrote:
Heh, ok - didn't notice that. Presume that they had actually meant to give two slightly different ISBN's, such as for two different editions of the same book.
two diferent editions of the same book always have a different ISBN number.
the ISBN number is meant to distinguish among different book in commerce. Since commercially two different editions of the same book are a different thing, they have a different ISBN.
The hypens are use to separate the different parts of the number (language, editor, book_id, checksum). The fild dimensions are not fixed. By the way since the last digit may also be an X (the checksum is done module 11), it is not strictly a number.
Any File