Institution
Bavarian State Library
42
University Library of Regensburg
39
Universitätsbibliothek der Humboldt-Universität zu Berlin
11
Zentralbibliothek Zürich
5
Bibliothèque Nationale et Universitaire de Strasbourg
4
University Library of Greifswald
4
University and Regional Library of Tyrol
2
University of Graz
1
Library of the Academy of Sciences of the Czech Republic
1
Research Library Olomouc
1