Institution
Saxon State and University Library
115
Universitätsbibliothek der Humboldt-Universität zu Berlin
27
Bavarian State Library
18
University Library of Regensburg
9
Zentralbibliothek Zürich
7
Toulouse and Midi-Pyrénées Universities Libraries Network
2
University Library of Greifswald
1
National Library of Sweden - Kungliga biblioteket
1