Institution
University Library of Regensburg
31
Universitätsbibliothek der Humboldt-Universität zu Berlin
23
The Swiss National Library
8
University of Graz
7
Bern University Library
5
University and Regional Library of Tyrol
5
Basel University Library
4
University Library Salzburg
4
Saxon State and University Library
2
University Library of Greifswald
1