On a method of making the wavelength of sodium light the actual and practical standard of length

@article{MichelsonOnAM,
  title={On a method of making the wavelength of sodium light the actual and practical standard of length},
  author={Albert Abraham Michelson and Edward W. Morley},
  journal={American Journal of Science},
  volume={s3-34},
  pages={427 - 430}
}
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