For the first time, the fundamental reference publication on librarianship includes over 2,000 articles. They contain: the main library terms and concepts, information about the largest libraries, including foreign ones, the library business of Russia and its constituent entities, as well as the CIS countries, about the history of librarianship, bibliography, prominent domestic and foreign figures, professional periodicals, etc. The encyclopedia presents articles on the informatization of the library industry, its place in the system of cultural communications, management in libraries, etc. The publication is addressed to library and information professionals, students, students and teachers of educational institutions and a wide range of cultural community.