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Volume 31(7);  July 1945
The cover of the journal
Bacteriology
Strain Specificity and Production of Antibiotic Substances: VI. Strain Variation and Production of Streptothricin by Actinomyces Lavendulae
Selman A. Waksman and Albert Schatz
Proc Natl Acad Sci U S A. 1945 July; 31(7): 208–214.
PMCID: PMC1078802
Botany
A Contribution to the Cytology of the Australian-South Pacific Species of Nicotiana
Helen-Mar Wheeler
Proc Natl Acad Sci U S A. 1945 July; 31(7): 177–185.
PMCID: PMC1078794
Mathematics
On a Class of Hermitian Transformations Containing Self-Adjoint Differential Operators
Hans Ludwig Hamburger
Proc Natl Acad Sci U S A. 1945 July; 31(7): 185–189.
PMCID: PMC1078795
New Types of Relations in Finite Field Theory (Second Paper)
H. S. Vandiver
Proc Natl Acad Sci U S A. 1945 July; 31(7): 189–194.
PMCID: PMC1078796
On Algebraic Lie Algebras
Claude Chevalley and Hsio-Fu Tuan
Proc Natl Acad Sci U S A. 1945 July; 31(7): 195–196.
PMCID: PMC1078797
Two Integral Equations
H. Bateman
Proc Natl Acad Sci U S A. 1945 July; 31(7): 196–200.
PMCID: PMC1078798
National Academy of Sciences
Vital Statistics of the National Academy of Sciences
Edwin B. Wilson
Proc Natl Acad Sci U S A. 1945 July; 31(7): 200–202.
PMCID: PMC1078799
Pathology
The Variation of Infectivity: II
Edwin B. Wilson and Jane Worcester
Proc Natl Acad Sci U S A. 1945 July; 31(7): 203–208.
PMCID: PMC1078801
Journal Matter
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