Latitude variation 1958·7–1959·9 at the Geodetical Observatory Pecný Jan Rambousek OriginalPaper 01 March 1961 Pages: 1 - 7
Электрооптический Дальномер с Кварцевым Модулятором Bořivoj DelongBohuslav SokolíkPřemek Neumann OriginalPaper 01 March 1961 Pages: 8 - 20
Magnetic storms: Their geometrical and physical analysis, and their classification Sydney Chapman OriginalPaper 01 March 1961 Pages: 30 - 50
Sur la nature et l'origine des microséismes européens Alois Zátopek OriginalPaper 01 March 1961 Pages: 51 - 63
L'activité volcanique et les éclipses de lune František Link OriginalPaper 01 March 1961 Pages: 64 - 75
The dispersity of industrial aerosols in the lower atmosphere Květoslav SpurnýJosef Pich OriginalPaper 01 March 1961 Pages: 85 - 91
Some terrestrial effects of flares and surge type filaments Ladislav KřivskýVojtěch Letfus Shorter Contributions 01 March 1961 Pages: 92 - 93