Institution
University Library of Regensburg
26
Universitätsbibliothek der Humboldt-Universität zu Berlin
21
Bavarian State Library
7
Bern University Library
6
University Library of Greifswald
5
Basel University Library
4
Saxon State and University Library
3
Zentralbibliothek Zürich
2
University of Graz
1
The Swiss National Library
1
University and Regional Library of Tyrol
1