Institution
University Library of Regensburg
29
Universitätsbibliothek der Humboldt-Universität zu Berlin
23
Bavarian State Library
15
Zentralbibliothek Zürich
5
University Library of Greifswald
2
National Library of Sweden - Kungliga biblioteket
2
University and Regional Library of Tyrol
2
University of Graz
1
Saxon State and University Library
1