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Volume 22(12);  December 1936
The cover of the journal
Botany
Plant Hormones and Mineral Nutrition
George S. Avery, Jr., P. R. Burkholder, and Harriet B. Creighton
Proc Natl Acad Sci U S A. 1936 December; 22(12): 673–678.
PMCID: PMC1076841
Genetics
A Simplified Explanation of Bellamy's Experiments Concerning Sex Determination in Tropical Fishes
W. E. Castle
Proc Natl Acad Sci U S A. 1936 December; 22(12): 679–682.
PMCID: PMC1076842
Mathematics
On Some New Invariants of a Manifold
Achille Bassi
Proc Natl Acad Sci U S A. 1936 December; 22(12): 698–699.
PMCID: PMC1076846
Enumeration of the Abelian Groups Whose Orders Do Not Exceed a Given Number
G. A. Miller
Proc Natl Acad Sci U S A. 1936 December; 22(12): 700–703.
PMCID: PMC1076847
Groups Whose Prime Powers Generate a Cyclic Subgroup
G. A. Miller
Proc Natl Acad Sci U S A. 1936 December; 22(12): 703–706.
PMCID: PMC1076848
On Regular Rings
John von Neumann
Proc Natl Acad Sci U S A. 1936 December; 22(12): 707–713.
PMCID: PMC1076849
Physics and Engineering
The Kinetic Basis of Crystal Polymorphism
M. J. Buerger
Proc Natl Acad Sci U S A. 1936 December; 22(12): 682–685.
PMCID: PMC1076843
The General Rôle of Composition in Polymorphism
M. J. Buerger
Proc Natl Acad Sci U S A. 1936 December; 22(12): 685–689.
PMCID: PMC1076844
Zoölogy and Anatomy
Notes on North American Leptodeira
Emmett Reid Dunn
Proc Natl Acad Sci U S A. 1936 December; 22(12): 689–698.
PMCID: PMC1076845
Journal Matter
Administrative content — journal masthead, notices, indexes, etc.
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