Landesamt für Bergbau, Energie und Geologie
Niedersächsisches Landesamt für Denkmalpflege
Lower Saxony State Museum
United States Geological Survey
Leiber (Germany)
Senckenberg Research Institute and Natural History Museum Frankfurt/M
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Natural History Museum
University of Kassel
University of Zurich
École Polytechnique Fédérale de Lausanne