Institution
University Library of Regensburg
79
Bavarian State Library
76
Universitätsbibliothek der Humboldt-Universität zu Berlin
66
Basel University Library
23
Bern University Library
17
Zentralbibliothek Zürich
9
University Library of Greifswald
4
The Swiss National Library
3
University of Graz
2
Saxon State and University Library
1