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Table of Contents

July 15, 1930; vol. 16 no. 7

Chemistry

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THE STRUCTURE OF SOME SODIUM AND CALCIUM ALUMINOSILICATES
Linus Pauling

PNAS July 15, 1930 16 (7) 453-459; https://doi.org/10.1073/pnas.16.7.453

Physiology and Pathology

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THE DEMONSTRATION THAT ALLERGIC INFLAMMATION IS NOT NECESSARY FOR THE OPERATION OF ACQUIRED IMMUNITY
Arnold Rice Rich

PNAS July 15, 1930 16 (7) 460-464; https://doi.org/10.1073/pnas.16.7.460

Astronomy

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ON THE SYSTEMATIC AND ACCIDENTAL ERRORS OF MODERN TRIGONOMETRIC PARALLAXES
Willem J. Luyten

PNAS July 15, 1930 16 (7) 464-473; https://doi.org/10.1073/pnas.16.7.464
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ON THE DISTANCES AND RADIAL VELOCITIES OF EXTRA-GALACTIC NEBULAE, AND THE EXPLANATION OF THE LATTER BY THE RELATIVITY THEORY OF INERTIA
W. de Sitter

PNAS July 15, 1930 16 (7) 474-488; https://doi.org/10.1073/pnas.16.7.474

Mathematics

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THE CELLULAR DIVISION AND APPROXIMATION OF REGULAR SPREADS
S. S. Cairns

PNAS July 15, 1930 16 (7) 488-491; https://doi.org/10.1073/pnas.16.7.488
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NORMAL COÖRDINATES IN THE GEOMETRY OF PATHS
Harry Levy

PNAS July 15, 1930 16 (7) 492-496; https://doi.org/10.1073/pnas.16.7.492

Physics

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THE CRYSTAL CLOCK
W. A. Marrison

PNAS July 15, 1930 16 (7) 496-507; https://doi.org/10.1073/pnas.16.7.496
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THE BAND SPECTRUM OF OZONE IN THE VISIBLE AND PHOTOGRAPHIC INFRA-RED
Oliver R. Wulf

PNAS July 15, 1930 16 (7) 507-511; https://doi.org/10.1073/pnas.16.7.507
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ON THE ESTIMATION OF DISTANCES IN A CURVED UNIVERSE WITH A NON-STATIC LINE ELEMENT
Richard C. Tolman

PNAS July 15, 1930 16 (7) 511-520; https://doi.org/10.1073/pnas.16.7.511

ZoÃlogy

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EXPERIMENTS IN BIRD MIGRATION. II. REVERSED MIGRATION
William Rowan

PNAS July 15, 1930 16 (7) 520-525; https://doi.org/10.1073/pnas.16.7.520

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