Institution
Universitätsbibliothek der Humboldt-Universität zu Berlin
36
University Library of Regensburg
24
Bavarian State Library
13
Zentralbibliothek Zürich
6
University of Graz
2
University and Regional Library of Tyrol
2
University Library of Greifswald
1
Bern University Library
1
University Library Salzburg
1
Vienna City Library
1