Institution
University Library of Regensburg
126
Bavarian State Library
51
Universitätsbibliothek der Humboldt-Universität zu Berlin
25
Zentralbibliothek Zürich
10
Bern University Library
3
University Library Salzburg
2
Vienna University Library
2
University Library of Greifswald
1
University and Regional Library of Tyrol
1