Institution
University Library of Regensburg
157
Universitätsbibliothek der Humboldt-Universität zu Berlin
128
Bavarian State Library
79
Bern University Library
4
Zentralbibliothek Zürich
3
University of Graz
2
Vienna City Library
2
Basel University Library
1
University Library of Greifswald
1
University Library Salzburg
1
University and Regional Library of Tyrol
1