Institution
Bavarian State Library
22
University Library of Regensburg
22
Universitätsbibliothek der Humboldt-Universität zu Berlin
20
Zentralbibliothek Zürich
9
National Library of Sweden - Kungliga biblioteket
2
University Library of Greifswald
1
The Swiss National Library
1
University and Regional Library of Tyrol
1
Vienna City Library
1