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tudor

21 Oct 2019 01:00



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Imagini cu fabricarea oglinzilor unor mari telescope

https://www.youtube.com/watch?v=MjUcBWYVF9s
https://www.youtube.com/watch?v=h4FBKbNY258
https://www.youtube.com/watch?v=c-lBKuHqHk0

