Institution
Bavarian State Library
105
Universitätsbibliothek der Humboldt-Universität zu Berlin
29
University Library of Regensburg
28
Martin-Opitz Bibliothek Herne
7
Bern University Library
6
Zentralbibliothek Zürich
5
Basel University Library
3
University Library of Greifswald
2
Saxon State and University Library
2
University and Regional Library of Tyrol
2
University of Graz
1