Thread: Why can't Calibre preserve ISBN-10 numbers?
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Old 10-29-2013, 09:04 PM   #7
theducks
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Quote:
Originally Posted by MelBr View Post
Older books don't have ISBN-13 numbers even though Calibre manages to find them somehow since they were added to some books by publishers.

Problem is that if you open an older book, there is no ISBN-13 in it… only ISBN-10.

And I have problem with Calibre replacing data arbitrarily and not supporting ISO standard which specifies both ISBN-10 and ISBN-13 as standards.
In many cases ISBN 13 is just the Bookland code version
( http://en.wikipedia.org/wiki/Bookland ) of ISBN <-note it is just ISBN back then

ISBN 13 is just the representation of ISBN(10) for UPC/EAN scanning
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