With the reunification of Germany on 3 October 1990 , the Deutsche Bücherei Leipzig and the Deutsche Bibliothek Frankfurt am Main were merged into a new institution , The German Library ( Die Deutsche Bibliothek ) .
With the unification of Germany on 3 October 1990 , the Deutsche Bücherei Leipzig and the Deutsche Bibliothek Frankfurt am Main were merged in the new institution Die Deutsche Bibliothek .