Institution
Bavarian State Library
505
University Library of Regensburg
235
University Library of Greifswald
147
Universitätsbibliothek der Humboldt-Universität zu Berlin
85
Basel University Library
46
Bern University Library
39
Zentralbibliothek Zürich
21
The Swiss National Library
14
National Library of Sweden - Kungliga biblioteket
1
University and Regional Library of Tyrol
1