Apparatus for the automatic measuring an
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Parsons, R. C.
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Article
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1914
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Wiley (John Wiley & Sons)
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adulteration in only two othcre, neither of whiEh, howcvcr, profeased to bo puro. Ono of thaw two wan low in 611 tho other valuttlr dctermincd, tho othor in total, anh only.