Institution
Bavarian State Library
53
Bern University Library
49
University Library of Regensburg
40
Universitätsbibliothek der Humboldt-Universität zu Berlin
36
Zentralbibliothek Zürich
19
University Library of Greifswald
9
Martin-Opitz Bibliothek Herne
8
Basel University Library
6
The Swiss National Library
4
Bibliothèque Nationale et Universitaire de Strasbourg
2
Saxon State and University Library
2