BN-OPALE PLUS combines into one catalog the records for the printed, sound, audiovisual, and multimedia materials collected by the Bibliothèque nationale de France (BnF) from its beginnings to the present day.

The BN-OPALE PLUS catalog contains records for:
* Books and periodicals making up the heritage collections, stored in BnF's François-Mitterrand Library,
* Microfiche and microfilm, mostly created from heritage materials,
* A selection of books and periodicals from special departments,
* Open-Access materials from all the BnF libraries,
* Sound recordings, videos, multimedia, and electronic materials comprising the heritage collections
* Printed material and periodicals digitized by BnF, mostly in image format,
* Electronic periodicals of which BnF also has the printed version,
* Still images digitized by BnF,
* Special materials regarding performing arts (pamphlets, programs, manuscripts,...) and cinema (movie posters, photographs).

In addition, this catalog offers authority records containing extensive information on access rights (intellectual property rights and copyrights, subject matter, certificates, brand names, and others).

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