Description : son institution et sa collectivité qui s'en trouvent valorisés. Reste à (se) convaincre : le congrès de l'Ifla à Lyon pourrait y contribuer. In sharing expertise, international coopération establishes a winning exchange for librarians, their institutions and their communities. All that is left to do is to convince others (and oneself) that the IFLA congress in Lyon could contribute to this.