Charles University / RUDOLF J. PROKOP National Museum / Museum Annual Report / Museum of Natural History / National Museum / /
NaturalFeature
Niagara / /
Organization
Department of Palaeontology / Upper Silurian Ludlow / Chicago Academy of Sciences Bulletin / Charles University / Palaeontological Department / Smithsonian / Czech Geological Society / Iowa Academy of Science / /
Person
Václav Petr / Washington D. C. Strimple / Bertrand Lefebure / Jana Nedomová / Boris Ekrt / /