The main spanish rule on donations of cultural property to state agencies isAct no.

Free help to enrich and increase in the collections of libraries.

Modern bibliographic materials (post-1958).

The exchange program consists of exchanging works, in any documentary format, with other libraries and cultural and research institutions internationally.

Bibliographic materials prior to 1958.

ISNI is the number global standard ISO certificate to identify personal and corporate authors involved in the creation and distribution of works of the imagination of any kind, including researcher

The Legal Deposit is the most ambitious documentary preservation system that exists and aspires to bring together everything that is published in each country.

Open and collaborative list of Spanish authors whose works are in the BNE and enter the public domain each year.