Watts, William Marshall, 1844- An introduction to the study of spectrum analysis / by W. Marshall Watts ... With coloured plate and 135 illustrations in the text.

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Watts, William Marshall, 1844-

An introduction to the study of spectrum analysis / by W. Marshall Watts ... With coloured plate and 135 illustrations in the text.

Spectrum analysis

Huggins, William, Sir, 1824-1910

Huggins, Lady, d. 1915.