Catalogues of libraries

Agence bibliographique de l'enseignement supérieur
CCN catalogue allowing to locate in which public library a periodical can be found.
http://www.abes.fr

BN-Opale
Catalogue of the National Library, which lists all the books of all the libraries in France.
http://www.bnf.fr/web-bnf/catalog/opale.htm

Catalogue collectif de France
Direct access to the common bibliographical database of the main French university libraries.
http://www.ccfr.bnf.fr

Gateway to Europe's National Libraries (Gabriel)
Access to the catalogue of the national libraries of the European countries (of which OPALE for France).
http://portico.bl.uk/gabriel/en/welcome.html