Institution
Bavarian State Library
22
Universitätsbibliothek der Humboldt-Universität zu Berlin
13
University Library of Regensburg
13
Bibliothèque Nationale et Universitaire de Strasbourg
11
Saxon State and University Library
9
Library service of the University of Strasbourg
3
University Library of Greifswald
2
National Library of Sweden - Kungliga biblioteket
1
Zentralbibliothek Zürich
1