Institution
Bavarian State Library
20
Bibliothèque Nationale et Universitaire de Strasbourg
9
Library service of the University of Strasbourg
6
University Library of Regensburg
5
Zentralbibliothek Zürich
5
Toulouse and Midi-Pyrénées Universities Libraries Network
3
Universitätsbibliothek der Humboldt-Universität zu Berlin
3
National Library of Sweden - Kungliga biblioteket
1
Saxon State and University Library
1
Bern University Library
1