Institution
University Library of Regensburg
13
Universitätsbibliothek der Humboldt-Universität zu Berlin
5
University of Graz
4
Library of the Academy of Sciences of the Czech Republic
2
University Library Salzburg
2
National Library of Estonia
1
National Library of Sweden - Kungliga biblioteket
1
National and University Library, Slovenia
1
University and Regional Library of Tyrol
1