Institution
University Library of Regensburg
15
Universitätsbibliothek der Humboldt-Universität zu Berlin
12
Bavarian State Library
8
Zentralbibliothek Zürich
3
Basel University Library
1
University Library of Greifswald
1
University of Graz
1
Bern University Library
1
University and Regional Library of Tyrol
1