Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 358
-An achromatic combination of lenses. … Fio. 412.—A section of an apochromaticmicroscope objective made by Zeiss. 348 DISPERSION, COLOUR, SPECTRUM ANALYSIS
Physics
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