Institution
University Library of Regensburg
60
Universitätsbibliothek der Humboldt-Universität zu Berlin
53
Bavarian State Library
17
Saxon State and University Library
15
University and Regional Library of Tyrol
13
Zentralbibliothek Zürich
13
University of Graz
8
The Swiss National Library
8
Bern University Library
8
Basel University Library
5
University Library of Greifswald
4
University Library Salzburg
3
Vienna City Library
1