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Old 03-31-2011, 01:42 PM   #38
drMerry
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Quote:
Originally Posted by theducks View Post
Some of my really old Dead Tree ™ books had SAN or ISBN's without the check digit (9 chars long) ( I think there may have been confusion at the time, that the check digit was not part of the ISBN to be printed)
That's a nasty one. If this is the case for e lot of books of this period, it would be a drawback.

Quote:
Originally Posted by theducks View Post
I backed in the check digit by trying [0-9X] until Calibre gave me a Green ISBN-10 confirmation.
Note: (USA publishers) space or dash were the only separators I saw. never mixed. never interrupted with other characters.
I can confirm I also have never seen it mixed. You have not seen dots between them?
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