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 30(5);  May 15, 1944
Mathematics
Permutable Periodic Transformations
P. A. Smith
Proc Natl Acad Sci U S A. 1944 May 15; 30(5): 105–108.
PMCID: PMC1078678
On the Arithmetic in a Group Ring
Richard Brauer
Proc Natl Acad Sci U S A. 1944 May 15; 30(5): 109–114.
PMCID: PMC1078679
Possible Numbers of Non-Invariant Operators of a Group
G. A. Miller
Proc Natl Acad Sci U S A. 1944 May 15; 30(5): 114–117.
PMCID: PMC1078680
Pathology and Bacteriology
Strain Specificity and Production of Antibiotic Substances: III. Penicillium Notatum—Chrysogenum Group
Selman A. Waksman and H. Christine Reilly
Proc Natl Acad Sci U S A. 1944 May 15; 30(5): 99–105.
PMCID: PMC1078677
Physics
The Biological Effects of X-Rays as a Function of Intensity
A. A. Bless
Proc Natl Acad Sci U S A. 1944 May 15; 30(5): 118–121.
PMCID: PMC1078681
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