Kalendar' nablyudatelya na sentyabr' 2014 goda
23.08.2014 11:40 | Aleksandr Kozlovskii

Ocherednoi vypusk ezhemesyachnika Kalendar' nablyudatelya rasskazhet vam ob osnovnyh yavleniyah mesyaca, dostupnyh dlya nablyudenii nevooruzhennym glazom i lyubitel'skimi opticheskimi sredstvami....