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Volume 29(9);  September 1943
The cover of the journal
Bacteriology
Strain Specificity and Production of Antibiotic Substances: II. Aspergillus Flavus-Oryzae Group
Selman A. Waksman and Elizabeth Bugie
Proc Natl Acad Sci U S A. 1943 September; 29(9): 282–288.
PMCID: PMC1078613
Biochemistry
Competition between Free and Combined Nitrogen in Nutrition of Azotobacter
P. W. Wilson, J. F. Hull, and R. H. Burris
Proc Natl Acad Sci U S A. 1943 September; 29(9): 289–294.
PMCID: PMC1078614
Mathematics
Dynamical Trajectories in a Resisting Medium
Edward Kasner
Proc Natl Acad Sci U S A. 1943 September; 29(9): 263–268.
PMCID: PMC1078608
Dynamical Trajectories of the Curvature Type
John De Cicco
Proc Natl Acad Sci U S A. 1943 September; 29(9): 268–270.
PMCID: PMC1078609
Union-Preserving Transformations of Differential-Elements
Edward Kasner and John De Cicco
Proc Natl Acad Sci U S A. 1943 September; 29(9): 271–275.
PMCID: PMC1078610
A Formula for the Stream Function of Certain Flows
Stefan Bergman
Proc Natl Acad Sci U S A. 1943 September; 29(9): 276–281.
PMCID: PMC1078611
Correction
Correction to “On Certain Non-Linear Differential Equations of the Second Order”
Proc Natl Acad Sci U S A. 1943 September; 29(9): 281.
PMCID: PMC1078612
Corrects: Norman Levinson. On Certain Non-Linear Differential Equations of the Second Order. Proc Natl Acad Sci U S A. 1943 July; 29(7): 222–223.
Journal Matter
Original table of contents page
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