[bksvol-discuss] Re: ISBN dilemma and questions
- From: Carrie Karnos <ckarnos@xxxxxxxxx>
- To: bksvol-discuss@xxxxxxxxxxxxx
- Date: Sun, 21 Sep 2008 11:15:13 -0700 (PDT)
Yes, Bookshare does a checksum on the ISBN number. I just found a description
of the algorithm at http://wiki.tcl.tk/12638. I happen to know the checksum
algorithm for credit cards, but not for ISBN numbers. Probably the OCR program
flipped a digit during its processing. Just checked on amazon.com - the 2nd 9
should be an 8, so the correct ISBN is 0-394-84193-X.
HTH, Carrie
----- Original Message ----
From: Karen Harshfield <karenh@xxxxxxxxxxxxxxxxx>
To: bksvol-discuss@xxxxxxxxxxxxx
Sent: Sunday, September 21, 2008 10:58:47 AM
Subject: [bksvol-discuss] ISBN dilemma and questions
Hi y'all,
I have been trying to submit a book this morning. It's:
Joel and the Great Merlini
by Eloise Jarvis McGraw
The book's copyright page lists two ISBN numbers
ISBN 0-394-94193–X
ISBN 0-394-94193-4 lib. bdg.
(the second number is for library binding)
BUT the dual number thing isn't my question.
I am entering the first ISBN number on the submit page, and I am getting
rejected as having entered an invalid ISBN number. I have cut and pasted
it from the scanned book, typed it in by hand, and tried it without the
hyphens. No good. Bookshare says it's invalid.
I have looked this book up on www.isbndb.com, and have found that the first
number is not listed. This website database has it listed with one digit
different. I have double checked the copyright page in the book, and the
book is different from the web site.
I guess my question is:
What does the bookshare submit page do to validate the ISBN number? Does
it look it up somewhere? Or is some kind of checksum used?
Yes, I could take the easy road, and use the second (library binding) ISBN
number. But my curiosity has been peaked.
- Karen
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