# metadata.dc.description.abstract[].value
In its long and irregular transition, from traditional library to the electronic book we have seen combining and alternating the hybrid, electronic and most recently the digital libraries. All these concepts which are combining and are conditioning each other, are referring to methods of organization and use of an informational content (which exists or not in an informational structure).

# metadata.dc.source[].value
Documents de treball / Informes (Biblioteconomia, Documentació i Comunicació Audiovisual)