pmc logo imageJournal ListSearchpmc logo image
Logo of pnasPNAS Home page.PNAS Editorial BoardPNAS AboutPNAS SubscriptionsPNAS Info for Authors
This journal provides immediate access to some articles.
Other Issues:  previous | next | latest | archive
Volume 34(5);  May 1948
The cover of the journal
Astronomy
Galactic and Extragalactic Studies: XIX. Giant Variable Stars of the Loop Nebula (30 Doradus)
Harlow Shapley and Virginia McKibben Nail
Proc Natl Acad Sci U S A. 1948 May; 34(5): 173–179.
PMCID: PMC1079087
Genetics
A New Theory of Secondary Non-Disjunction in Female Drosophila Melanogaster
Kenneth W. Cooper
Proc Natl Acad Sci U S A. 1948 May; 34(5): 179–187.
PMCID: PMC1079088
The Origin of Volutin on the Chromosomes, Its Transfer to the Nucleolus, and Suggestions Concerning the Significance of this Phenomenon
Carl C. Lindegren
Proc Natl Acad Sci U S A. 1948 May; 34(5): 187–193.
PMCID: PMC1079089
Mathematics
Boundaries of ULC Sets in Euclidean n-Space
M. H. A. Newman
Proc Natl Acad Sci U S A. 1948 May; 34(5): 193–196.
PMCID: PMC1079090
Cyclotomic Power Characters and Trinomial Equations in a Finite Field
H. S. Vandiver
Proc Natl Acad Sci U S A. 1948 May; 34(5): 196–203.
PMCID: PMC1079091
The Stability of Differential Equations with Periodic Coefficients
Sylvan Wallach
Proc Natl Acad Sci U S A. 1948 May; 34(5): 203–204.
PMCID: PMC1079092
On Some Exponential Sums
André Weil
Proc Natl Acad Sci U S A. 1948 May; 34(5): 204–207.
PMCID: PMC1079093
On Spaces with Vanishing Low-Dimensional Homotopy Groups
George W. Whitehead
Proc Natl Acad Sci U S A. 1948 May; 34(5): 207–211.
PMCID: PMC1079094
Physics
Group Theoretical Discussion of Relativistic Wave Equations
V. Bargmann and E. P. Wigner
Proc Natl Acad Sci U S A. 1948 May; 34(5): 211–223.
PMCID: PMC1079095
Psychology
Stereoscopic Acuity for Various Levels of Illumination
C. G. Mueller and V. V. Lloyd
Proc Natl Acad Sci U S A. 1948 May; 34(5): 223–227.
PMCID: PMC1079096
Journal Matter
Original table of contents page
| PDF–47K |
Administrative content — journal masthead, notices, indexes, etc.
Other Issues:  previous | next | latest | archive
Articles from Proceedings of the National Academy of Sciences of the United States of America are provided here courtesy of
National Academy of Sciences