Institution
University Library of Regensburg
50
Universitätsbibliothek der Humboldt-Universität zu Berlin
17
Saxon State and University Library
13
Bavarian State Library
11
Bibliothèque Nationale et Universitaire de Strasbourg
9
National Library of the Czech Republic
6
Zentralbibliothek Zürich
5
University and Regional Library of Tyrol
4
National Library of Estonia
3
Bern University Library
2
Library service of the University of Strasbourg
2
Masaryk University, Faculty of Arts
1
National Library of Sweden - Kungliga biblioteket
1