Institution
Universitätsbibliothek der Humboldt-Universität zu Berlin
110
University Library of Regensburg
100
Bavarian State Library
46
Basel University Library
24
Zentralbibliothek Zürich
10
University and Regional Library of Tyrol
6
University of Graz
5
University Library Salzburg
2
University Library of Greifswald
1