Institution
University Library of Regensburg
151
Universitätsbibliothek der Humboldt-Universität zu Berlin
139
Bavarian State Library
75
University and Regional Library of Tyrol
7
University Library of Greifswald
5
National Library of Sweden - Kungliga biblioteket
3
Zentralbibliothek Zürich
3
University of Graz
2
Basel University Library
1
The Swiss National Library
1
University Library Salzburg
1