Telescopes (5 of 15) How the Refracting Telescope is Built

Telescopes (5 of 15) How the Refracting Telescope is Built
ΑΣΤΡΟΝΟΜΙΑ - VIDEO ΤΗΛΕΣΚΟΠΙΑ

Telescopes (5 of 15) How the Refracting Telescope is Built

21 Μαρτίου 2016
[ot-video][/ot-video]
V05