- Ernest H. Vestine
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Introductory Remarks
PNAS 1957 43: 1-2.
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- John Firor
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Inferences from Radio Signals from the Sun and Planets
PNAS 1957 43: 2-8.
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- E. N. Parker
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The Solar Hydromagnetic Dynamo
PNAS 1957 43: 8-14.
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- Walter M. Elsasser
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The Terrestrial Dynamo
PNAS 1957 43: 14-24.
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- S. Chandrasekhar
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On Cosmic Magnetic Fields
PNAS 1957 43: 24-27.
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- Scott E. Forbush
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Solar Influences on Cosmic Rays
PNAS 1957 43: 28-41.
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- J. A. Simpson
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Solar Origin of Changes in the Primary Cosmic Radiation
PNAS 1957 43: 42-56.
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- James A. Van Allen
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Direct Detection of Auroral Radiation with Rocket Equipment
PNAS 1957 43: 57-62.
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- C. T. Elvey
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Problems of Auroral Morphology
PNAS 1957 43: 63-75.
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- Julius Bartels
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Solar Influences on Geomagnetism
PNAS 1957 43: 75-81.
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- E. H. Vestine
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Observational and Theoretical Aspects of Magnetic and Ionospheric Storms
PNAS 1957 43: 81-92.
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- E. O. Hulburt
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Variations of the Ionosphere and of the Solar Intensity with Sunspots
PNAS 1957 43: 92-95.
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- Sigmund Fritz
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Solar Radiation and the Lower Atmosphere
PNAS 1957 43: 95-104.
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- William Arnold and Helen K. Sherwood
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Are Chloroplasts Semiconductors?
PNAS 1957 43: 105-114.
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- Winston H. Price
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Studies on the Immunological Overlap Among Certain Arthropod-Borne Viruses. II. The Role of Serologic Relationships in Experimental Vaccination Procedures
PNAS 1957 43: 115-121.
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- J. Herbert Taylor, Philip S. Woods, and Walter L. Hughes
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The Organization and Duplication of Chromosomes as Revealed by Autoradiographic Studies Using Tritium-Labeled Thymidine
PNAS 1957 43: 122-128.
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- D. W. Woolley, E. Van Winkle, and E. Shaw
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A Method for Increasing Brain Serotonin Without Incurring Some of the Peripheral Effects of the Hormone
PNAS 1957 43: 128-133.
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- Robert Emerson, Ruth Chalmers, and Carl Cederstrand
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Some Factors Influencing the Long-Wave Limit of Photosynthesis
PNAS 1957 43: 133-143.
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- Dan McLachlan
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The Symmetry of Dendritic Snow Crystals
PNAS 1957 43: 143-151.
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- Albert Szent-Gyorgyi
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Excitations and Polymerization
PNAS 1957 43: 151-152.
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- David Bruck
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Male Segregation Ratio Advantage as a Factor in Maintaining Lethal Alleles in Wild Populations of House Mice
PNAS 1957 43: 152-158.
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- L. C. Dunn
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Evidence of Evolutionary Forces Leading to the Spread of Lethal Genes in Wild Populations of House Mice
PNAS 1957 43: 158-163.
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- G. W. Ford and G. E. Uhlenbeck
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Combinatorial Problems in the Theory of Graphs. IV
PNAS 1957 43: 163-167.
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- R. C. Gunning
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Indices of Rank and of Singularity on Abelian Varieties
PNAS 1957 43: 167-169.
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- C. D. Papakyriakopoulos
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On Dehn's Lemma and the Asphericity of Knots
PNAS 1957 43: 169-172.
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- J. Wermer
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Function Rings on the Circle
PNAS 1957 43: 173-175.
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- Philip E. Hildreth and Gweneth L. Carson
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Influence of the Type of Inseminated Female on the Lethal Frequency in the X Chromosome from the Male
PNAS 1957 43: 175-183.
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- A. Moscona
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The Development in vitro of Chimeric Aggregates of Dissociated Embryonic Chick and Mouse Cells
PNAS 1957 43: 184-194.
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