alt Hacker NewsI read that it's much worse than that, and there are ISBNs that were reused for completely different books.
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NoMoreNicksLeft • yesterday at 11:58 PM
I've stumbled across 3 or 4 magazines that printed the wrong ISSN in more than one issue. One from the 80s did so in every single issue of it's 20some issue run. It must be true that some books have done so as well, but I don't even check that those are correct.
In my experience this is very very rare. Rare enough that it's practically negligible.