George Calver
@george-calver

Works by George Calver

Book cover of "New Edition of Hints on Silver-Glass Reflecting Telescopes Manufactured by Mr. G. Calver, F.R.A.S. - with Directions for Silvering, Adjusting, &c."

New Edition of Hints on Silver-Glass Reflecting Telescopes Manufactured by Mr. G. Calver, F.R.A.S. - with Directions for Silvering, Adjusting, &c.

George Calver

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