Institution
Universitätsbibliothek der Humboldt-Universität zu Berlin
31
University Library of Greifswald
24
University Library of Regensburg
22
National Library of Sweden - Kungliga biblioteket
11
Bavarian State Library
10
Basel University Library
7
Uppsala University Library
7
Bern University Library
4
Zentralbibliothek Zürich
3
University and Regional Library of Tyrol
1