Institution
University Library of Regensburg
10
Bern University Library
7
Universitätsbibliothek der Humboldt-Universität zu Berlin
6
Bibliothèque Nationale et Universitaire de Strasbourg
5
National Library of the Czech Republic
5
Bavarian State Library
4
National Library of Sweden - Kungliga biblioteket
4
National Library of Estonia
2
University of Tartu Library
2
Zentralbibliothek Zürich
1