datos.bne.es: A library linked dataset

We describe the datos.bne.es library dataset. The dataset makes available the authority and bibliography catalogue from the Biblioteca Nacional de Espaoa BNE, National Library of Spain as Linked Data. The catalogue contains around 7 million authority and bibliographic records. The records in MARC 21 format were transformed to RDF and modelled using IFLA International Federation of Library Associations ontologies and other well-established vocabularies such as RDA Resource Description and Access or the Dublin Core Metadata Element Set. A tool named MARiMbA automatized the RDF generation process and the data linkage to DBpedia and other library linked data resources such as VIAF Virtual International Authority File or GND Gemeinsame Normdatei, the authority dataset from the German National Library.