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Volume 33(5);  May 1947
The cover of the journal
Biochemistry
Studies on the Biochemistry of Tetrahymena: IX. Folic Acid Components and Conjugates
G. W. Kidder and Virginia C. Dewey
Proc Natl Acad Sci U S A. 1947 May; 33(5): 95–102.
PMCID: PMC1079001
Genetics
Blood Groups of the Rat (Rattus Norvegicus) and Their Inheritance
S. O. Burhoe
Proc Natl Acad Sci U S A. 1947 May; 33(5): 102–109.
PMCID: PMC1079002
The Domestication of the Rat
W. E. Castle
Proc Natl Acad Sci U S A. 1947 May; 33(5): 109–117.
PMCID: PMC1079003
Mathematics
An Expression of Hopf's Invariant as an Integral
J. H. C. Whitehead
Proc Natl Acad Sci U S A. 1947 May; 33(5): 117–123.
PMCID: PMC1079004
Cohomology Invariants of Mappings
N. E. Steenrod
Proc Natl Acad Sci U S A. 1947 May; 33(5): 124–128.
PMCID: PMC1079005
The (L2)-Space of Relative Measure
Philip Hartman and Aurel Wintner
Proc Natl Acad Sci U S A. 1947 May; 33(5): 128–132.
PMCID: PMC1079006
On the Maximum Partial Sum of Independent Random Variables
Kai Lai Chung
Proc Natl Acad Sci U S A. 1947 May; 33(5): 132–136.
PMCID: PMC1079007
Some Results on Additive Theory of Numbers
Loo-Keng Hua
Proc Natl Acad Sci U S A. 1947 May; 33(5): 136–137.
PMCID: PMC1079008
Physics
On the Multiplicity of Steady Gas Flows Having the Same Streamline Pattern
M. Munk and R. Prim
Proc Natl Acad Sci U S A. 1947 May; 33(5): 137–141.
PMCID: PMC1079009
Zoology
Turbulence as an Environmental Determinant of Relative Growth in Daphnia
John L. Brooks
Proc Natl Acad Sci U S A. 1947 May; 33(5): 141–148.
PMCID: PMC1079010
A Direct Demonstration of the Phosphorus Cycle in a Small Lake
G. Evelyn Hutchinson and Vaughan T. Bowen
Proc Natl Acad Sci U S A. 1947 May; 33(5): 148–153.
PMCID: PMC1079011
Journal Matter
Original table of contents page
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