Institution
University Library of Regensburg
17
Universitätsbibliothek der Humboldt-Universität zu Berlin
16
Bavarian State Library
6
Zentralbibliothek Zürich
3
University Library of Greifswald
2
Toulouse and Midi-Pyrénées Universities Libraries Network
1
National Library of Sweden - Kungliga biblioteket
1
Bern University Library
1