User talk:191.176.158.88

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Happy editing! Nat Gertler (talk) 12:42, 3 May 2019 (UTC)

ISBN dashes
I see that, on multiple pages, you've been inserting hyphens into ISBN numbers for books. That's a nice sort of little clean-up to do, and I appreciate your initiative. Unfortunately, you've not been placing the hyphens in the correct places. You've been placing most of them, but leaving out the hyphen that goes between the publisher identifier and the specific book code (those aren't the technical names for those fields, I'm too lazy at the moment to look them up.) This isn't a placement that you can just guess at, it doesn't have a fixed place in the number (generally speaking, larger publishers have shorter identifiers and longer book codes, smaller publishers longer identifiers, shorter codes.) If you're not going to do the research needed to put that hyphen in on a given book, it's probably best not to put the hyphens in at all, because once you put any hyphens in, other editors will think that it's been hyphenated and won't do the research needed to find correct hyphenation. If you do want to get correct hyphenation, the quickest way I've found to get it is to click on the ISBN in the reference, which takes you to a page of links for that ISBN. Some of those links may have the ISBN hyphenated. The Google Books link will often show you the first few pages of the book, including the copyright page, where the ISBN is usually present. Let me know if you have any questions! --Nat Gertler (talk) 12:52, 3 May 2019 (UTC)