Institution
Universitätsbibliothek der Humboldt-Universität zu Berlin
22
University Library of Regensburg
19
Bavarian State Library
11
Basel University Library
9
Zentralbibliothek Zürich
8
Bern University Library
7
University Library of Greifswald
6
Saxon State and University Library
4
Bibliotheken Schaffhausen
3