Institution
Universitätsbibliothek der Humboldt-Universität zu Berlin
301
University Library of Regensburg
248
Bavarian State Library
203
Zentralbibliothek Zürich
59
Basel University Library
24
Bern University Library
17
University of Graz
6
University and Regional Library of Tyrol
3
Library Am Guisanplatz
2
University Library of Greifswald
2
The Swiss National Library
2