standardization

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The standardization of potassium permanganate in iron analysis
Charlotte F. Roberts

American Journal of Science October 1894, s3-48 (286) 290-292; DOI: https://doi.org/10.2475/ajs.s3-48.286.290
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On a method of making the wavelength of sodium light the actual and practical standard of length
A. A. Michelson and E. W. Morley

American Journal of Science December 1887, s3-34 (204) 427-430; DOI: https://doi.org/10.2475/ajs.s3-34.204.427

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