Institution
Universitätsbibliothek der Humboldt-Universität zu Berlin
45
Bavarian State Library
30
University Library of Regensburg
27
Library service of the University of Strasbourg
8
University Library of Greifswald
4
Zentralbibliothek Zürich
4
Basel University Library
3
University of Graz
2
National Library of Estonia
1
Bern University Library
1
University and Regional Library of Tyrol
1