Bibliographischer Nachweis für Dokumente und Publikationen der Vereinten Nationen - Tutorial: http://staatsbibliothek-berlin.de/deutsch/faecher/downloads/datenbankschulung/un_datenbanken.ppt
Catalog of U.S. Government Publications (CGP) - Tutorial: http://staatsbibliothek-berlin.de/deutsch/faecher/downloads/datenbankschulung/usa_egovernment_db-info.ppt
he Archaeology Data Service (ADS) supports research, learning and teaching with high quality and dependable digital resources. It does this by preserving digital data in the long term, and by promoting and disseminating a broad range of data in archaeology. The ADS promotes good practice in the use of digital data in archaeology, it provides technical advice to the research community, and supports the deployment of digital technologies.