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Start Over Subjects Optical Phenomena ✖Remove constraint Subjects: Optical Phenomena Authors Harkness, William, 1837-1903, author ✖Remove constraint Authors: Harkness, William, 1837-1903, author Titles On the color correction of achromatic telescopes: a reply to Prof. Chas. S. Hastings ✖Remove constraint Titles: On the color correction of achromatic telescopes: a reply to Prof. Chas. S. Hastings

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  • On the color correction of achromatic telescopes: a reply to Prof. Chas. S. Hastings1