Institution
National Library of Sweden - Kungliga biblioteket
69
Uppsala University Library
44
University of Tartu Library
14
National Library of the Czech Republic
9
National Library of Estonia
8
Toulouse and Midi-Pyrénées Universities Libraries Network
3
University Library of Greifswald
3
Universitätsbibliothek der Humboldt-Universität zu Berlin
3
Zentralbibliothek Zürich
3
Library of the Academy of Sciences of the Czech Republic
2
Basel University Library
1