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Re:Ask HN: Has anybody built search on top of Anna's Archive? by notpushkin on Thursday June 05, 2025 @05:25AM (#44189892)
Hmmm, yeah, ISBN isn’t great for this. Is there a good way to deduplicate the books by their contents?
Re:Ask HN: Has anybody built search on top of Anna's Archive? by WillAdams on Thursday June 05, 2025 @07:07AM (#44190440)
LoC or Dewey Decimal with author and title (and edition?) should work.

I wish there was some better book cataloging/organizing scheme --- the Online Books Page uses LoC:

https://onlinebooks.library.upenn.edu/subjects.html

and is the most workable of the indices I've used.