Richardson, O. W., & P. M. Davidson

The spectrum of H2: The bands analogous to the Parhelium Line Spectrum. - Part III. The spectrum of H2: The bands analogous to the Parhelium Line Spectrum. - Part IV.

[London]: Reprinted from the Proceedings of the Royal Society, 1929. 8vo, pp. [2], 51-88; original green printed wrappers. Reprinted from the Proceedings of the Royal Society, A, Vol. 124, 1929. Item #56803

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