Administered by the Institute of Bibliographic Research (IIB), the is the country's premier bibliographic repository. Its mission is to acquire, preserve, and provide access to Mexico's bibliographic and documentary heritage. The BNM is the designated repository for the country's legal deposit, meaning it receives a copy of every book published in Mexico, making it an unparalleled archive of the national printed memory. Its digital counterpart, the Biblioteca Nacional Digital de México (BND) , offers access to thousands of digitized titles, archival collections, and iconographic documents that form part of the nation's historical memory.