Publikacii
za 18 dekabrya 2013.
Razdel: Astronomicheskoe obrazovanie
XXI Sankt-Peterburgskaya astronomicheskaya olimpiada Uvazhaemye druz'ya! Nastupil novyi olimpiadnyi god! My priglashaem Vas i vashih tovarishei prinyat' uchastie v XXI Sankt-Peterburgskoi astronomicheskoi olimpiade. S 5 dekabrya po 15 yanvarya prohodit otborochnyi etap Olimpiady. |
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