
a guest post by Till Grallert A recent Twitter post from my former colleague Anne Klammt made me aware of a recent relaunch of “Zeitschriftendatenbank” (ZDB), the portal for periodical holdings in German (and Austrian) libraries. Part of the German National Library (Deutsche Nationalbibliothek, DNB), the website looks great and provides a lot of data-driven functionality, such as maps and timelines of holdings.