Institution
University Library of Regensburg
708
Universitätsbibliothek der Humboldt-Universität zu Berlin
487
Bavarian State Library
89
University Library of Greifswald
8
University of Graz
7
University and Regional Library of Tyrol
5
Zentralbibliothek Zürich
4
The Swiss National Library
1
Bern University Library
1