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Volume 19(12);  December 1933
The cover of the journal
Astronomy
Summary of a Variable Star Survey in an External Galaxy
Harlow Shapley and Jenka Mohr
Proc Natl Acad Sci U S A. 1933 December; 19(12): 995–996.
PMCID: PMC1086269
The Terrestrial Abundance of the Permanent Gases
Henry Norris Russell and Donald H. Menzel
Proc Natl Acad Sci U S A. 1933 December; 19(12): 997–1001.
PMCID: PMC1086270
On the Linear Diameters of 125 Large Galaxies
Harlow Shapley
Proc Natl Acad Sci U S A. 1933 December; 19(12): 1001–1006.
PMCID: PMC1086271
Chemistry
Separation of Hydrogen Isotopes by Diffusion through Palladium
L. Harris, W. Jost, and R. W. B. Pearse
Proc Natl Acad Sci U S A. 1933 December; 19(12): 991–994.
PMCID: PMC1086268
Genetics
Linkage Interrelations of Three Genes for Rex (Short) Coat in the Rabbit
W. E. Castle and Hans Nachtsheim
Proc Natl Acad Sci U S A. 1933 December; 19(12): 1006–1011.
PMCID: PMC1086272
The Gene Theory in Relation to Blending Inheritance
W. E. Castle
Proc Natl Acad Sci U S A. 1933 December; 19(12): 1011–1015.
PMCID: PMC1086273
The Effect of X-Ray Dosage on Sterility and Number of Lethals in Drosophila melanogaster
M. Demerec
Proc Natl Acad Sci U S A. 1933 December; 19(12): 1015–1020.
PMCID: PMC1086274
The Specific Formula of Heredity
Harry H. Laughlin
Proc Natl Acad Sci U S A. 1933 December; 19(12): 1020–1022.
PMCID: PMC1086275
A Cytogenetical Study of a Reciprocal Translocation in Zea
Marcus M. Rhoades
Proc Natl Acad Sci U S A. 1933 December; 19(12): 1022–1031.
PMCID: PMC1086276
A Secondary Trisome in Maize
Marcus M. Rhoades
Proc Natl Acad Sci U S A. 1933 December; 19(12): 1031–1038.
PMCID: PMC1086277
Mathematics
A Duality in Interpolation to Analytic Functions by Rational Functions
J. L. Walsh
Proc Natl Acad Sci U S A. 1933 December; 19(12): 1049–1053.
PMCID: PMC1086281
Groups Involving a Small Number of Squares
G. A. Miller
Proc Natl Acad Sci U S A. 1933 December; 19(12): 1054–1057.
PMCID: PMC1086282
A Theory for *-Operators Analogous to the Theory of Reducibility for Self-Adjoint Transformations in Hilbert Space
F. J. Murray
Proc Natl Acad Sci U S A. 1933 December; 19(12): 1057–1058.
PMCID: PMC1086283
Physics
On the Temperature Dependence of Ferro-Magnetic Saturation
Paul S. Epstein
Proc Natl Acad Sci U S A. 1933 December; 19(12): 1044–1049.
PMCID: PMC1086280
Psychology
On Overlap
Edwin B. Wilson
Proc Natl Acad Sci U S A. 1933 December; 19(12): 1039–1044.
PMCID: PMC1086279
Zoölogy
The Color Changes of Elasmobranch Fishes
G. H. Parker
Proc Natl Acad Sci U S A. 1933 December; 19(12): 1038–1039.
PMCID: PMC1086278
Journal Matter
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