Institution
Bavarian State Library
32
Universitätsbibliothek der Humboldt-Universität zu Berlin
25
University Library of Regensburg
25
Zentralbibliothek Zürich
6
National Library of Sweden - Kungliga biblioteket
4
University Library of Greifswald
3
Library of the Academy of Sciences of the Czech Republic
2
Basel University Library
1
Toulouse and Midi-Pyrénées Universities Libraries Network
1
University of Graz
1
Saxon State and University Library
1
Research Library Olomouc
1