Title: A list of 402 northern lights observed in Bohemia, Moravia and Slovakia from 1013 till 1951 /
Authors: Seydl, Otto.; Československá akademie věd.
Publisher: Československá akademie vĕd, Geofysikální ústav],
Year: 1954
Subjects: Auroras Czech Republic Bohemia Observations.; Auroras Czech Republic Moravia Observations.; Auroras Slovakia Observations.