Institution
Bavarian State Library
27
University Library of Greifswald
9
National Library of Sweden - Kungliga biblioteket
4
The Swiss National Library
2
Bern University Library
2
Universitätsbibliothek der Humboldt-Universität zu Berlin
2
National Library of Portugal
1
Martin-Opitz Bibliothek Herne
1
University Library of Regensburg
1
University and Regional Library of Tyrol
1