Institution
Saxon State and University Library
56
Universitätsbibliothek der Humboldt-Universität zu Berlin
52
Bavarian State Library
17
University Library of Regensburg
10
Zentralbibliothek Zürich
10
The Swiss National Library
2
Academic health library (Paris)
1
University of Graz
1
National Library of Sweden - Kungliga biblioteket
1