Institution
University Library of Regensburg
250
Universitätsbibliothek der Humboldt-Universität zu Berlin
199
Bavarian State Library
76
Zentralbibliothek Zürich
8
Basel University Library
3
University and Regional Library of Tyrol
3
University Library of Greifswald
2
Bern University Library
2
University of Graz
1
The Swiss National Library
1