01:5501:55, 20 November 2010diffhist−31
ThriftBooks
The topics in this article appear to be backed by verified references - I'm not sure why user 96.61.44.218 flagged it as Advertisement. Removing Advert tag but leaving Orphan tag.
07:4007:40, 22 May 2008diffhist+331
Check digit
Added reference to UPC check digit calculation algorithm. Fixed formatting for GS1 link. Converted link to check digit calculator to reference.
07:2307:23, 22 May 2008diffhist−278
Check digit
Removed two references that weren't being used as citations and added reflist template to references section
07:0207:02, 22 May 2008diffhist+279
Check digit
Made ISBN 13 its own section, added reference to calculating ISBN 13 check digit, removed incorrect statement about converting UPC directly to EAN-13. (only the 5 digit Publication Element is shared)
05:5605:56, 18 May 2008diffhist+204
Expelled: No Intelligence Allowed
Added ref to one of the positive reviews to give it due weight: See discussion about this change in talk, archive 10, section; Bias against "Expelled" the basic...
11:2711:27, 5 May 2008diffhist+153 N
User talk:Calebb
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