TY - JOUR A1 - Hejda, P. A1 - Valach, F. A1 - Revallo, M. T1 - Historical geomagnetic observations from Prague observatory (since 1839) and their contribution to geomagnetic research JO - Hist. Geo Space. Sci. J1 - HGSS VL - 14 IS - 1 SP - 51 EP - 60 Y1 - 2023/04/04 PB - Copernicus Publications SN - 2190-5029 UR - https://hgss.copernicus.org/articles/14/51/2023/ L1 - https://hgss.copernicus.org/articles/14/51/2023/hgss-14-51-2023.pdf DO - 10.5194/hgss-14-51-2023 ER -