АстроФест - 2019“Как довести покупнойтелескоп до ума и сделать из него астрограф.“ - Иван Ионов.
“Как довести покупной телескоп до ума и сделать из него астрограф.“ - Иван Ионов.Практическая часть.АстроФест - 2019
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