The National Library of China serves as the repository of the nation's publications, a national bibliographic center, as well a national center for the preservation and conservation for ancient books. The major mission of the NLC includes: the collection and preservation of domestic and foreign publications; national coordination of document preservation and conservation work; provision of information and reference services to the central government, other governmental organizations, social organizations, and the general public; research in library sciences, and development of library services and programs, and guidance to other libraries in China with its expertise; the fulfillment of its role in international cultural exchanges through participation in the activities of the International Federation of Library Associations and Institutions (IFLA) and other related organizations worldwide, as well as the promotion of exchanges and cooperation with other libraries in China and abroad.