Institution
Universitätsbibliothek der Humboldt-Universität zu Berlin
601
University Library of Regensburg
326
Bavarian State Library
304
Zentralbibliothek Zürich
44
Basel University Library
30
Bern University Library
23
Library Am Guisanplatz
5
University and Regional Library of Tyrol
4
University of Graz
3
University Library of Greifswald
2
The Swiss National Library
2
Saxon State and University Library
1
University Library Salzburg
1