Table of Contents

Physics

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  The Quantum Levels and Resulting Constants of the Hydrogen Molecule

  Raymond T. Birge

  PNAS January 1, 1928 14 (1) 12-19; https://doi.org/10.1073/pnas.14.1.12
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  The Scattering of X-Rays from Gases

  Charles S. Barrett

  PNAS January 1, 1928 14 (1) 20-23; https://doi.org/10.1073/pnas.14.1.20
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  The Distribution of Energy in Molecules

  Louis S. Kassel

  PNAS January 1, 1928 14 (1) 23-30; https://doi.org/10.1073/pnas.14.1.23
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  The Life of Atomic States and the Intensity of Spectral Lines

  I. S. Bowen

  PNAS January 1, 1928 14 (1) 30-32; https://doi.org/10.1073/pnas.14.1.30
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  THE SPECTRA OF SINGLY AND DOUBLY IONIZED GERMANIUM (GE II AND III)

  R. J. Lang

  PNAS January 1, 1928 14 (1) 32-36; https://doi.org/10.1073/pnas.14.1.32
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  The Structure and Dimensions of the Ethane Molecule

  Jared Kirtland Morse

  PNAS January 1, 1928 14 (1) 37-40; https://doi.org/10.1073/pnas.14.1.37
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  The Lattice Structure of Ethane

  Jared Kirtland Morse

  PNAS January 1, 1928 14 (1) 40-45; https://doi.org/10.1073/pnas.14.1.40
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  Relations of Field-Currents to Thermionic-Currents

  R. A. Millikan and C. C. Lauritsen

  PNAS January 1, 1928 14 (1) 45-49; https://doi.org/10.1073/pnas.14.1.45
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  The Photochemical Union of Hydrogen and Chlorine

  Louis Harris

  PNAS January 1, 1928 14 (1) 110-112; https://doi.org/10.1073/pnas.14.1.110