Roscoe, Henry E. (1885). Spectrum analysis. Macmillan and Co.. Retrieved from 10.5479/sil.445046.39088007494685
Roscoe, Henry E. Spectrum analysis. Fourth edition revised and considerably enlarged / by the author and by Arthur Schuster ..., Macmillan and Co., 1885, 10.5479/sil.445046.39088007494685
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Roscoe, Henry E. Spectrum analysis. Macmillan and Co., 1885. doi: 10.5479/sil.445046.39088007494685