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Start Over Collections Medicine in the Americas, 1610-1920 ✖Remove constraint Collections: Medicine in the Americas, 1610-1920 Subjects Colorimetry -- methods ✖Remove constraint Subjects: Colorimetry -- methods Authors Stone, Willard J. (Willard John), 1877-1943, author ✖Remove constraint Authors: Stone, Willard J. (Willard John), 1877-1943, author

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