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Hmmm, yeah, ISBN isn’t great for this. Is there a good way to deduplicate the books by their contents?


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.




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