Institution
Bavarian State Library
34
University Library of Regensburg
31
Universitätsbibliothek der Humboldt-Universität zu Berlin
20
Bern University Library
16
Zentralbibliothek Zürich
9
University Library of Greifswald
5
Martin-Opitz Bibliothek Herne
5
Basel University Library
3
The Swiss National Library
2
Bibliothèque Nationale et Universitaire de Strasbourg
1
Saxon State and University Library
1
Library service of the University of Strasbourg
1