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Volume 32(6);  June 1946
The cover of the journal
Genetics
Reverse-Mutation and Adaptation in Leucineless Neurospora
Francis J. Ryan and Joshua Lederberg
Proc Natl Acad Sci U S A. 1946 June; 32(6): 163–173.
PMCID: PMC1078908
Mathematics
On Blocks of Characters of Groups of Finite Order: I
Richard Brauer
Proc Natl Acad Sci U S A. 1946 June; 32(6): 182–186.
PMCID: PMC1078910
The Rate of Growth of Analytic Functions
R. P. Boas, Jr.
Proc Natl Acad Sci U S A. 1946 June; 32(6): 186–188.
PMCID: PMC1078911
A Generalization of the Hopf Invariant
George W. Whitehead
Proc Natl Acad Sci U S A. 1946 June; 32(6): 188–190.
PMCID: PMC1078912
On the Stability of Systems of Differential Equations
Richard Bellman
Proc Natl Acad Sci U S A. 1946 June; 32(6): 190–193.
PMCID: PMC1078913
Zoölogy
Varieties and Mating Types in Paramecium Bursaria: I. New Variety and Types, from England, Ireland, and Czechoslovakia
Tze-Tuan Chen
Proc Natl Acad Sci U S A. 1946 June; 32(6): 173–181.
PMCID: PMC1078909
Journal Matter
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