Institution
Bavarian State Library
23
Bibliothèque Nationale et Universitaire de Strasbourg
14
University Library of Regensburg
12
Universitätsbibliothek der Humboldt-Universität zu Berlin
10
Zentralbibliothek Zürich
5
University Library of Greifswald
3
Saxon State and University Library
2
National Library of Estonia
1
National Library of Sweden - Kungliga biblioteket
1
Library service of the University of Strasbourg
1