Institution
Bavarian State Library
21
Universitätsbibliothek der Humboldt-Universität zu Berlin
15
Zentralbibliothek Zürich
15
National Library of Sweden - Kungliga biblioteket
9
Bibliothèque Nationale et Universitaire de Strasbourg
6
University Library of Regensburg
6
Saxon State and University Library
5
University Library of Greifswald
3
Library service of the University of Strasbourg
1