Institution
University Library of Regensburg
79
Universitätsbibliothek der Humboldt-Universität zu Berlin
74
Bavarian State Library
46
The Swiss National Library
5
Zentralbibliothek Zürich
5
University and Regional Library of Tyrol
4
National Library of Sweden - Kungliga biblioteket
3
Basel University Library
2
University Library of Greifswald
2
Bern University Library
1