Kód: 17286445
There are not many branches of science where amateurs regularly contribute significant observations or discoveries. Astronomy is somewhat different, not least because the number of professional astronomers is relatively small and ... celý popis
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There are not many branches of science where amateurs regularly contribute significant observations or discoveries. Astronomy is somewhat different, not least because the number of professional astronomers is relatively small and observing time at the majo
424 Kč
Osobní odběr Praha, Brno a 12903 dalších
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