Institution
Bavarian State Library
398
Zentralbibliothek Zürich
30
University Library of Regensburg
27
Universitätsbibliothek der Humboldt-Universität zu Berlin
14
University Library of Greifswald
3
University of Graz
2
University and Regional Library of Tyrol
2
Saxon State and University Library
1
Library service of the University of Strasbourg
1