Books about Reflecting telescopes
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Displaying results 1–2
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On the Construction of a Silvered Glass Telescope
Henry Draper
Nov 17, 2016
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New Edition of Hints on Silver-Glass Reflecting Telescopes Manufactured by Mr. G. Calver, F.R.A.S.
George Calver
Nov 10, 2016
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Displaying results 1–2
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