If you have an external identifier you often can find the record you want Worldcat can use the lccn property
See http://worldcat.org/identities/lccn-n79005597/ That is Wikidata Q7724<https://www.wikidata.org/wiki/Q7724> that has property P244 lcauth https://m.wikidata.org/wiki/Property:P244 If you check VIAF you see The Wikidata record https://viaf.org/viaf/54154627/ and also Lccn 79005597 https://viaf.org/processed/LC%7Cn%20%2079005597 You can also use the Lccn number and find the Wikidata record https://tools.wmflabs.org/sqid/#/view?find=P244:n79005597 Hope it make sense.... its loosely coupled system and then it maybe is not the best structure..... Regards Magnus Sälgö Stockholm, Sweden 6 mars 2018 kl. 18:15 skrev Ettore RIZZA <ettoreri...@gmail.com<mailto:ettoreri...@gmail.com>>: Dear all, I asked myself a series of questions about the links between Wikidata and other knowledge/data bases, namely those of OCLC and DBpedia. For example: - Why Wikidata has no property "Worldcat Identities<https://nam03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fworldcat.org%2Fidentities%2F&data=02%7C01%7C%7C24ed3d8b41df4df00fc008d58385ecec%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559533579975247&sdata=DhHWzrQOoGjvmELLEAEXk49jehINSaIzcaSI2%2F9yWeg%3D&reserved=0>" while the English edition of Wikipedia systematically mentions this identity (when it exists) in its section "Autorithy control" ? - Why do VIAF links to all editions of Wikipedia, but not (simply) to Wikidata ? - Why is there no link to DBpedia when the opposite is true ? These questions may seem very different from each other, but they ultimately concern a common subject and are all very basic. I suspect they had to be discussed somewhere, maybe at the dawn of Wikidata. However, I find nothing in the archives of this Newsletter, nor in the discussions on Wikidata. Could someone point me to some documentation on these issues ? Cheers, Ettore Rizza _______________________________________________ Wikidata mailing list Wikidata@lists.wikimedia.org<mailto:Wikidata@lists.wikimedia.org> https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.wikimedia.org%2Fmailman%2Flistinfo%2Fwikidata&data=02%7C01%7C%7C24ed3d8b41df4df00fc008d58385ecec%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559533580131494&sdata=ptVK%2Fz0vOXxJG6QDWeEaHZNhTtr6jo0VUs2Yul%2BcqfQ%3D&reserved=0
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