Andy, The /book/book_edition/ISBN is a mix of -13 and -10 sometimes even weirder :)
It was deprecated (but still holds value) about 3 years ago by Jeff Prucher @ Google and we moved the -13 instances into https://www.freebase.com/media_common/cataloged_instance/isbn13 Although I do not now if the copy (done by a bot script at the time by Metaweb) was complete. It seems to be however by quick glance... there are 1.6 Million Cataloged instances alone from various OPACs, etc. that were imported into Freebase in 2012. I should probably jump into this and help you guys with this mapping. Thad +ThadGuidry <https://www.google.com/+ThadGuidry> On Tue, Jun 16, 2015 at 5:00 AM, Andy Mabbett <[email protected]> wrote: > On 16 June 2015 at 00:24, Thomas Pellissier-Tanon <[email protected]> > wrote: > > > As you may already know, I am currently working on the importation of > > Freebase content into Wikidata [1] using the primary source tool [2]. > > > > One of the big challenges of the migration is to build a good mapping of > the > > properties of Freebase to Wikidata ones.There are a few thousand of > > properties so it is a task too big to be done alone. Your help is far > more > > than welcome for this task on this page: > > https://www.wikidata.org/wiki/Wikidata:WikiProject_Freebase/Mapping > > https://www.freebase.com/book/book_edition/ISBN could be P212 > (ISBN-13) or P957 (ISBN-10). How would you like us to map that? > > -- > Andy Mabbett > @pigsonthewing > http://pigsonthewing.org.uk > > _______________________________________________ > Wikidata mailing list > [email protected] > https://lists.wikimedia.org/mailman/listinfo/wikidata >
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