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The excitation of the spectra of nitrogen by electron impacts ...Duncan, D. C. January 1900 (has links)
Thesis (Ph. D.)--University of Michigan, 1924. / Cover title. "Reprinted from the Astrophysical Journal, vol. LXII, no. 3, October 1925." "Errata" slip mounted on verso of plate I.
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The excitation of the spectra of nitrogen by electron impacts ...Duncan, D. C. January 1900 (has links)
Thesis (Ph. D.)--University of Michigan, 1924. / Cover title. "Reprinted from the Astrophysical Journal, vol. LXII, no. 3, October 1925." "Errata" slip mounted on verso of plate I.
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