I was just looking at the front material of a book and saw that its “SBN” was 671-21320-2. I didn’t know that there was a pre-international version of the ISBN.
And here’s some information if you’re curious about the 13-digit ISBNs that have been appearing recently.
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Oh yes. To convert any 9-digit SBN to an 10-digit ISBN, prefix it with “0-“.
5/29/2006 @ 6:29 pm