Institution
Bavarian State Library
21
University Library of Regensburg
12
Universitätsbibliothek der Humboldt-Universität zu Berlin
8
Bibliothèque Nationale et Universitaire de Strasbourg
7
Zentralbibliothek Zürich
4
University Library of Greifswald
3
Library service of the University of Strasbourg
1
University and Regional Library of Tyrol
1