Thread: ISBN-x to ISBN-13 conversion / sort
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Old 05-30-2023, 09:48 AM   #11
PvanG
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PvanG began at the beginning.
 
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Join Date: May 2023
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To all,
thanks for your input!
The: not identifiers:isbn:~^.{13}$
did the job for me, @chaley thanks for that!
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