[Koha] ISBNs

[Stacy Pober]

Saw your post on the Koha list.

Some publishers have indeed prepended 978 to their shorter ISBNs but for
other publishers, the 13 and 10 digit ISBNs are different, so your matching
rule would not work well.

For example, the book Running with Scissors:
*ISBN-10:* 0312938853
*ISBN-13:* 978-0312938857

Add to that the problem of having multiple ISSNs in many records.  Some
OCLC records for a book will list in the the hardback, paperback, cased
set, and ebook ISBNs all in 020$a fields for one of those versions.  Some
ebook vendor-supplied records put the hardcover ISBN in the 020$a and don't
list the electronic version's ISBN at all.

Which is to say, the 3 digit offset is not going to work well at all.
Happy Boxing Day!
-- 
Stacy Pober
Information Alchemist
Manhattan College Library
Riverdale, NY 10471
stacy.pober at manhattan.edu
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