Institution
Saxon State and University Library
64
University Library of Regensburg
15
Universitätsbibliothek der Humboldt-Universität zu Berlin
11
National Library of Sweden - Kungliga biblioteket
8
Bavarian State Library
4
University and Regional Library of Tyrol
3
University Library Salzburg
2
Research Library Olomouc
2
University of Graz
1