Institution
University Library of Regensburg
34
Universitätsbibliothek der Humboldt-Universität zu Berlin
18
Bavarian State Library
11
Bern University Library
3
Basel University Library
2
University Library of Greifswald
1
University Library Salzburg
1
Library service of the University of Strasbourg
1
Zentralbibliothek Zürich
1