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theducks · 02-18-2019, 06:14 PM

The information is still there, you just lost the parse (publisher and book number) implied part. BPH gets 1 or 2 digits of Publisher, while a vanity press may only get 1 digit of book number.

Note ISBN 13 (EAN) does not have the check digit that ISBN10 does (0-9,X)

02-18-2019, 06:14 PM	#2
theducks Well trained by Cats Posts: 31,094 Karma: 60358908 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	The information is still there, you just lost the parse (publisher and book number) implied part. BPH gets 1 or 2 digits of Publisher, while a vanity press may only get 1 digit of book number. Note ISBN 13 (EAN) does not have the check digit that ISBN10 does (0-9,X)