Institution
National Library of Sweden - Kungliga biblioteket
4
Universitätsbibliothek der Humboldt-Universität zu Berlin
4
Vienna City Library
3
Bibliothèque Nationale et Universitaire de Strasbourg
2
National and University Library, Slovenia
2
Library of the Academy of Sciences of the Czech Republic
1
National Library of Estonia
1
Library service of the University of Strasbourg
1