Institution
Bavarian State Library
52
Bern University Library
49
University Library of Regensburg
39
Universitätsbibliothek der Humboldt-Universität zu Berlin
35
University Library of Greifswald
9
Zentralbibliothek Zürich
9
Basel University Library
5
The Swiss National Library
4
Saxon State and University Library
2
Bibliothèque Nationale et Universitaire de Strasbourg
1