The Union Catalogue of Books Printed in German Speaking Countries in the 17th Century (VD 17) is a retrospective national bibliography for the period 1601 to 1700. Included are all German-language items as well as any work printed and published in the German speaking countries of the time, regardless of its language. VD 17 is supported by the Staatsbibliothek zu Berlin – Preußischer Kulturbesitz, Bayerische Staatsbibliothek München, and Herzog August Bibliothek Wolfenbüttel. The VD 17 database and online catalogue are hosted by the Common Library Network (GBV).
Currently VD 17 lists 301.217 items (17.12.2018).
New items since the beginning of this year: 1.618.