Novosti
za 23 sentyabrya 2013.
Kalendar' nablyudatelya na oktyabr' 2013 goda Ocherednoi vypusk ezhemesyachnika Kalendar' nablyudatelya rasskazhet vam ob osnovnyh yavleniyah mesyaca dostupnyh dlya nablyudenii nevooruzhennym glazom i lyubitel'skimi opticheskimi sredstvami.... |
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