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.（Calver, George 著）属公有领域作品，本页面提供公版书免费下载，已通过夸克网盘 / 百度网盘分发。读者可一键转存至个人网盘，离线阅读或永久保存。