Institution
University Library of Regensburg
313
Universitätsbibliothek der Humboldt-Universität zu Berlin
198
Research Library Olomouc
68
Bavarian State Library
8
The Swiss National Library
8
University and Regional Library of Tyrol
8
National Library of the Czech Republic
6
University of Graz
5
University Library Salzburg
4
National Library of Sweden - Kungliga biblioteket
3
Zentralbibliothek Zürich
3
National Library of Estonia
1
Umeå University Library
1