Institution
University Library of Regensburg
34
Bavarian State Library
19
Zentralbibliothek Zürich
18
Universitätsbibliothek der Humboldt-Universität zu Berlin
15
University and Regional Library of Tyrol
5
Basel University Library
3
University of Graz
2
Bern University Library
2
University Library of Greifswald
1
National Library of Estonia
1