Institution
University Library of Regensburg
21
Basel University Library
8
Saxon State and University Library
7
Bavarian State Library
6
Universitätsbibliothek der Humboldt-Universität zu Berlin
6
Bern University Library
4
University Library of Greifswald
1
The Swiss National Library
1
University and Regional Library of Tyrol
1
Zentralbibliothek Zürich
1