Institution
Universitätsbibliothek der Humboldt-Universität zu Berlin
372
University Library of Regensburg
48
Bavarian State Library
32
University and Regional Library of Tyrol
7
Basel University Library
6
University Library of Greifswald
5
Bern University Library
4
Zentralbibliothek Zürich
3
National Library of Sweden - Kungliga biblioteket
2