Institution
Bavarian State Library
434
University Library of Regensburg
304
Universitätsbibliothek der Humboldt-Universität zu Berlin
100
Basel University Library
74
Bern University Library
52
Zentralbibliothek Zürich
13
Saxon State and University Library
10
University Library of Greifswald
6
The Swiss National Library
2
Library Am Guisanplatz
1
Martin-Opitz Bibliothek Herne
1
National Library of Sweden - Kungliga biblioteket
1
University and Regional Library of Tyrol
1