See also WorldCat:
> WorldCat is a union catalog that itemizes the collections of 17,900 libraries in 123 countries and territories[4] that participate in the OCLC global cooperative. It is operated by OCLC, Inc.[5] The subscribing member libraries collectively maintain WorldCat's database, the world's largest bibliographic database.[6]
* https://en.wikipedia.org/wiki/WorldCat
* https://www.worldcat.org