Institution
Bavarian State Library
18
Universitätsbibliothek der Humboldt-Universität zu Berlin
9
University Library of Regensburg
8
Library of the Academy of Sciences of the Czech Republic
7
Library service of the University of Strasbourg
5
Bibliothèque Nationale et Universitaire de Strasbourg
4
Zentralbibliothek Zürich
3
University of Graz
2
University Library Salzburg
1
Vienna City Library
1