Hosted Extension: Bibliographic Extension is a set of extensible schemas that enables webmasters to embed structured data on their web pages for use by search engines and other applications. For more details, see the homepage.

This is the front page for the Bibliographic Extension, whose short name is: bib

You are viewing the Bibliographic Extension within It defines terms such as Audiobook, Thesis, ComicStory, and workTranslation. For more details see the W3C BibExtend Community Group's wiki.
This should be considered a pre-final preview release; final changes may be made after wider community review.