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On the Origin of the Sodium Lines during Twilight
Phys. Rev. 79, 167 – Published 1 July, 1950
DOI: https://doi.org/10.1103/PhysRev.79.167.2
Phys. Rev. 79, 167 – Published 1 July, 1950
DOI: https://doi.org/10.1103/PhysRev.79.167.2