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Enrico Angelo Lodovico Negretti and Joseph Zambra2025-08-29T04:10:04Zhttps://book.klll.cc/ebooks/39141.opdsEarly American Scientific Instruments and Their MakersSilvio A. Bedini2025-08-29T04:10:04Zhttps://book.klll.cc/ebooks/53494.opdsNew Edition of Hints on Silver-Glass Reflecting Telescopes Manufactured by Mr. G. Calver, F.R.A.S.George Calver