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Volume 40(4);  April 1954
The cover of the journal
Biochemistry
THE INHIBITION OF HYDROGENASE BY NITRIC OXIDE
Alvin I. Krasna and D. Rittenberg
Proc Natl Acad Sci U S A. 1954 April; 40(4): 225–227.
PMCID: PMC527979
A BIOCHEMICAL AND PHARMACOLOGICAL SUGGESTION ABOUT CERTAIN MENTAL DISORDERS
D. W. Woolley and E. Shaw
Proc Natl Acad Sci U S A. 1954 April; 40(4): 228–231.
PMCID: PMC527980
Mathematics
DYNAMIC PROGRAMMING AND A NEW FORMALISM IN THE CALCULUS OF VARIATIONS
Richard Bellman
Proc Natl Acad Sci U S A. 1954 April; 40(4): 231–235.
PMCID: PMC527981
A CHARACTERIZATION OF TAME CURVES IN THREE-SPACE
O. G. Harrold, Jr., H. C. Griffith, and E. E. Posey
Proc Natl Acad Sci U S A. 1954 April; 40(4): 235–237.
PMCID: PMC527982
CONFORMAL GEOMETRY AND ELEMENTARY PARTICLES
R. Ingraham
Proc Natl Acad Sci U S A. 1954 April; 40(4): 237–240.
PMCID: PMC527983
APPROXIMATION BY BOUNDARY VALUES OF ANALYTIC FUNCTIONS
Jacqueline Penez
Proc Natl Acad Sci U S A. 1954 April; 40(4): 240–243.
PMCID: PMC527984
A NOTE ON THE ABSTRACT CAUCHY PROBLEM
R. S. Phillips
Proc Natl Acad Sci U S A. 1954 April; 40(4): 244–248.
PMCID: PMC527985
NEW TYPES OF TRINOMIAL CONGRUENCE CRITERIA APPLYING TO FERMAT'S LAST THEOREM
H. S. Vandiver
Proc Natl Acad Sci U S A. 1954 April; 40(4): 248–252.
PMCID: PMC527986
Physioexilogy
POLARIZED LIGHT AND ANGLE OF STIMULUS INCIDENCE IN THE COMPOUND EYE OF LIMULUS
Talbot H. Waterman
Proc Natl Acad Sci U S A. 1954 April; 40(4): 258–262.
PMCID: PMC527988
Physiology
DIRECTIONAL SENSITIVITY OF SINGLE OMMATIDIA IN THE COMPOUND EYE OF LIMULUS
Talbot H. Waterman
Proc Natl Acad Sci U S A. 1954 April; 40(4): 252–257.
PMCID: PMC527987
Journal Matter
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