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Details
BOHR, Niels (1885-1962). "On the Quantum Theory of Line-Spectra", in: Mémoires de l'Académie Royale des Sciences et des Lettres de Danemark, Volume IV, fasc.1-3, pp.1-118. Copenhagen: Host & Son, 1918-22. 3 parts, 4° (265x 210mm). Original wrappers, uncut, in a folding cloth box.
SCARCE. A fourth part was planned but never published. (3)
SCARCE. A fourth part was planned but never published. (3)
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