Institution
Bavarian State Library
60
Zentralbibliothek Zürich
31
Universitätsbibliothek der Humboldt-Universität zu Berlin
28
University Library of Regensburg
26
Basel University Library
8
University Library of Greifswald
4
University of Graz
2
Bern University Library
2
University and Regional Library of Tyrol
2
National Library of Sweden - Kungliga biblioteket
1
National and University Library, Slovenia
1