Do WorldCat.org search results apply the FRBR concept?
Yes. WorldCat records in the 3.45 million record set provided to Google and Yahoo! have had the FRBR algorithm applied, so multiple versions of a work (e.g. different editions and formats) are rolled up under a single record. This allows the set to provide Web users access to approximately 75% of all WorldCat holdings. Users can click the “Editions” tab to see other formats and versions of a work in WorldCat results.