Institution
University Library of Regensburg
100
Universitätsbibliothek der Humboldt-Universität zu Berlin
69
Bavarian State Library
34
Bern University Library
19
Basel University Library
13
University Library of Greifswald
9
Saxon State and University Library
6
Bibliotheken Schaffhausen
6
The Swiss National Library
4
Zentralbibliothek Zürich
1