I have a used copy of Mockingbird by Kathryn Erskine and it has two ISBNs--one above the barcode and a different one on the copyright page.
The back cover has the ISBN-13 listed as 9780545358088. Searching for this ISBN gives no results. However on the copyright page it lists the ISBN-13 as 9780545307253. The result for that ISBN is nearly a match for my book--same cover, publisher, and number of pages. However the copyright page of my copy says "First Scholastic printing, January 2011" whereas Mockingbird is listed as being published in 2010.
One thing I did note is that on the back cover of my copy it says, "this edition is available for distribution only through the school market," although I'm not sure if that is relevant.
Should I add a new edition for the ISBN-13 9780545358088?
The back cover has the ISBN-13 listed as 9780545358088. Searching for this ISBN gives no results. However on the copyright page it lists the ISBN-13 as 9780545307253. The result for that ISBN is nearly a match for my book--same cover, publisher, and number of pages. However the copyright page of my copy says "First Scholastic printing, January 2011" whereas Mockingbird is listed as being published in 2010.
One thing I did note is that on the back cover of my copy it says, "this edition is available for distribution only through the school market," although I'm not sure if that is relevant.
Should I add a new edition for the ISBN-13 9780545358088?