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Volume 32(11);  November 1946
The cover of the journal
Mathematics
Determination of the Second Homology and Cohomology Groups of a Space by Means of Homotopy Invariants
Samuel Eilenberg and Saunders MacLane
Proc Natl Acad Sci U S A. 1946 November; 32(11): 277–280.
PMCID: PMC1078947
Rational Functions of a Complex Variable and Related Potential Curves
Edward Kasner and John De Cicco
Proc Natl Acad Sci U S A. 1946 November; 32(11): 280–282.
PMCID: PMC1078948
Physics
Integral and Rational Numbers in the Nuclear Domain and Their Significance
Enos E. Witmer
Proc Natl Acad Sci U S A. 1946 November; 32(11): 283–288.
PMCID: PMC1078949
On Behrbohm and Pinl's Linearization of the Equation of Two-Dimensional Steady Polytropic Flow of a Compressible Fluid
C. Truesdell
Proc Natl Acad Sci U S A. 1946 November; 32(11): 289–293.
PMCID: PMC1078950
Erratum
Reverse-Mutation and Adaptation in Leucineless Neurospora
Proc Natl Acad Sci U S A. 1946 November; 32(11): 293.
PMCID: PMC1078951
Corrects: Francis J. Ryan, et al. Reverse-Mutation and Adaptation in Leucineless Neurospora. Proc Natl Acad Sci U S A. 1946 June; 32(6): 163–173.
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