The Integrated Authority File (German: Gemeinsame Normdatei) or GND is an international authority file. It is used by librarians for the organisation of personal names, subject headings and corporate bodies. It is used mainly for documentation in libraries and increasingly also by archives and museums. The GND is managed by the German National Library in cooperation with various library networks in German-speaking Europe and other partners. The GND falls under the Creative Commons Zero (CC0) license.