Keywords: František Nachtikal (1874-1939).jpg cs František Nachtikal 1874 - 1939 Český fyzik a pedagog before 1929 http //encyklopedie brna cz/home-mmb/ acc profil_osobnosti load 14385 anonymous other versions Custom license marker 2015 05 11 Anonymous-EU Uploaded with UploadWizard František Nachtikal |