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Old 05-24-2020, 01:59 AM   #4
BetterRed
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Posts: 21,832
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Join Date: Mar 2012
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Is the metadata in the epub .opf files not the same as the library database?

Assuming its not, the only way I can think of is to unzip the epubs into folders and search them with an external content search tool, most will let you specify the file type(s) to search and some support regex searches.

BR
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