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Table of Contents

December 01, 1923; vol. 9 no. 12

Mathematics

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Note on an Experimental Problem of the Late A. G. Webster
F. L. Hitchcock

PNAS December 1, 1923 9 (12) 399-401; https://doi.org/10.1073/pnas.9.12.399
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A New Kind of Representation of Surfaces
G. Y. Rainich

PNAS December 1, 1923 9 (12) 401-403; https://doi.org/10.1073/pnas.9.12.401
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The Electromagnetic Field and Curvature
G. Y. Rainich

PNAS December 1, 1923 9 (12) 404-406; https://doi.org/10.1073/pnas.9.12.404
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On the Deformation of an n Cell
J. W. Alexander

PNAS December 1, 1923 9 (12) 406-407; https://doi.org/10.1073/pnas.9.12.406

Genetics

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Control of the Appearance of Pupa-Larvae in Paedogenetic Diptera
Reginald G. Harris

PNAS December 1, 1923 9 (12) 407-413; https://doi.org/10.1073/pnas.9.12.407

Physics

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The Wave-Lengths of Secondary X-Rays
George L. Clark and William Duane

PNAS December 1, 1923 9 (12) 413-418; https://doi.org/10.1073/pnas.9.12.413
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The Wave-Lengths of Secondary X-Rays (Second note)
George L. Clark and William Duane

PNAS December 1, 1923 9 (12) 419-424; https://doi.org/10.1073/pnas.9.12.419

ZoÃ¶logy

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Symbiosis between Termites and Their Intestinal Protozoa
L. R. Cleveland

PNAS December 1, 1923 9 (12) 424-428; https://doi.org/10.1073/pnas.9.12.424

Pathology

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The Absolute Weight of the Heart and the Spleen
Raymond Pearl and Agnes Latimer Bacon

PNAS December 1, 1923 9 (12) 428-433; https://doi.org/10.1073/pnas.9.12.428
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The Nature of Resistance to Seedling Blight of Cereals
James G. Dickson, Sophia H. Eckerson, and Karl P. Link

PNAS December 1, 1923 9 (12) 434-439; https://doi.org/10.1073/pnas.9.12.434

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