Institution
Bavarian State Library
14
Universitätsbibliothek der Humboldt-Universität zu Berlin
5
University Library of Regensburg
4
Zentralbibliothek Zürich
3
Saxon State and University Library
2
Basel University Library
1
University of Graz
1
Moravian Library in Brno
1
Library service of the University of Strasbourg
1