Institution
Bavarian State Library
46
Zentralbibliothek Zürich
26
University Library of Regensburg
18
Universitätsbibliothek der Humboldt-Universität zu Berlin
13
Basel University Library
7
Bern University Library
2
University Library of Greifswald
1
University of Graz
1
National Library of Sweden - Kungliga biblioteket
1
National and University Library, Slovenia
1