Table of Contents

February 1951; 37 (2)

Biochemistry

  • Biochemistry:
    • Ruth Hubbard
    • and George Wald

    The Mechanism of Rhodopsin Synthesis

    PNAS 1951 37:69-79

Genetics

  • Genetics:
    • Herschel Roman,
    • Donald C. Hawthorne,
    • and Howard C. Douglas

    Polyploidy in Yeast and its Bearing on the Occurrence of Irregular Genetic Ratios

    PNAS 1951 37:79-84

Mathematics

  • Mathematics:
    • Richard Bellman

    On the Functional Equations of the Dirichlet Series Derived from Siegel Modular Forms

    PNAS 1951 37:84-87
  • Mathematics:
    • R. H. Bruck
    • and Erwin Kleinfeld

    The Structure of Alternative Division Rings

    PNAS 1951 37:88-90
  • Mathematics:
    • Herbert Federer

    Hausdorff Measure and Lebesgue Area

    PNAS 1951 37:90-94
  • Mathematics:
    • Michael Fekete

    On the Structure of Extremal Polynomials

    PNAS 1951 37:95-103
  • Mathematics:
    • Hans Lewy

    On the Boundary Behavior of Minimal Surfaces

    PNAS 1951 37:103-110
  • Mathematics:
    • Calvin R. Putnam
    • and Aurel Wintner

    The Connectedness of the Orthogonal Group in Hilbert Space

    PNAS 1951 37:110-112
  • Mathematics:
    • Morgan Ward

    A Class of Soluble Diophantine Equations

    PNAS 1951 37:113-114

Physics

  • Physics:
    • Dan McLachlan, Jr.

    The Determination of Crystal Structures from X-Ray Data Without a Knowledge of the Phases of the Fourier Coefficients

    PNAS 1951 37:115-124

Psychology

  • Psychology:
    • Don Lewis
    • and Alfred H. Shephard

    Prior Learning as a Factor in Shaping Performance Curves

    PNAS 1951 37:124-131

This Issue

  1. Biochemistry
  2. Genetics
  3. Mathematics
  4. Physics
  5. Psychology

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