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Table of Contents

February 01, 1961; vol. 47 no. 2

Biochemistry

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SEQUENCE COMPLEMENTARITY OF T2-DNA AND T2-SPECIFIC RNA
Benjamin D. Hall and S. Spiegelman

PNAS February 1, 1961 47 (2) 137-146; https://doi.org/10.1073/pnas.47.2.137
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FORMATION OF HETEROZYGOTES BY ANNEALING A MIXTURE OF TRANSFORMING DNAS
Roger M. Herriott

PNAS February 1, 1961 47 (2) 146-153; https://doi.org/10.1073/pnas.47.2.146
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THE KINETICS OF CARRIER-MEDIATED ACTIVE TRANSPORT OF AMINO ACIDS
John A. Jacquez

PNAS February 1, 1961 47 (2) 153-163; https://doi.org/10.1073/pnas.47.2.153
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THE ROLE OF PROTEIN SYNTHESIS IN EARLY ESTROGEN ACTION
Gerald C. Mueller, John Gorski, and Yoshio Aizawa

PNAS February 1, 1961 47 (2) 164-169; https://doi.org/10.1073/pnas.47.2.164

Botany

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A KINETIN-LIKE COMPOUND IN MAIZE
Carlos O. Miller

PNAS February 1, 1961 47 (2) 170-174; https://doi.org/10.1073/pnas.47.2.170

Chemistry

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STABILIZATION OF NH IN HYDROCARBON MATRICES AND ITS RELATION TO COMETARY PHENOMENA
Jay A. Glasel

PNAS February 1, 1961 47 (2) 174-180; https://doi.org/10.1073/pnas.47.2.174

Genetics

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CORRELATED CHANGES IN ENVIRONMENT AND LETHAL FREQUENCY IN A NATURAL POPULATION OF DROSOPHILA MELANOGASTER
H. T. Band and P. T. Ives

PNAS February 1, 1961 47 (2) 180-185; https://doi.org/10.1073/pnas.47.2.180

Geophysics

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THE FUNDAMENTAL FREE MODE OF THE EARTH'S INNER
Louis B. Slichter

PNAS February 1, 1961 47 (2) 186-190; https://doi.org/10.1073/pnas.47.2.186

Mathematics

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THE CATEGORY OF TOPOLOGICAL OBJECTS
Yeaton H. Clifton and J. Wolfgang Smith

PNAS February 1, 1961 47 (2) 190-195; https://doi.org/10.1073/pnas.47.2.190
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DEGREE OF APPROXIMATION TO A CONTINUOUS FUNCTION ON A NON-ANALYTIC CURVE
W. E. Sewell

PNAS February 1, 1961 47 (2) 195-202; https://doi.org/10.1073/pnas.47.2.195
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SOME ASPECTS OF THE FERMAT PROBLEM (FIRST PAPER)
H. S. Vandiver

PNAS February 1, 1961 47 (2) 202-209; https://doi.org/10.1073/pnas.47.2.202
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THE POSSIBILITY OF TSCHEBYCHEFF QUADRATURE ON INFINITE INTERVALS
Herbert S. Wilf

PNAS February 1, 1961 47 (2) 209-213; https://doi.org/10.1073/pnas.47.2.209

Microbiology

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A RADIOBIOLOGICAL ANALOGY BETWEEN MEASLES VIRUS AND TEMPERATURE PHAGES
Paul H. Ackerman and Francis L. Black

PNAS February 1, 1961 47 (2) 213-220; https://doi.org/10.1073/pnas.47.2.213

Pathology

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INVESTIGATION OF DISEASE RESISTANCE AND THE MATHEMATICAL PROBLEM OF PATTERNS
Roger J. Williams

PNAS February 1, 1961 47 (2) 221-224; https://doi.org/10.1073/pnas.47.2.221

Physics

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EFFECT OF SURFACE TENSION ON THE KELVIN-HELMHOLTZ INSTABILITY OF TWO ROTATING FLUIDS
Z. Alterman

PNAS February 1, 1961 47 (2) 224-227; https://doi.org/10.1073/pnas.47.2.224
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ON A MANY-DIMENSIONAL BWK APPROXIMATION
Don H. Secrest and Joseph O. Hirschfelder

PNAS February 1, 1961 47 (2) 227-240; https://doi.org/10.1073/pnas.47.2.227

ZoÃlogy

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THE EFFECTS OF REDUCED COMPETITION IN BIRDS
Kenneth Crowell

PNAS February 1, 1961 47 (2) 240-243; https://doi.org/10.1073/pnas.47.2.240

Corrections

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A Method for Defining Principal Modes of Nonlinear Systems Utilizing Infinite Determinants
PNAS February 1, 1961 47 (2) 243;
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On the Mutagenic Effect of Alkylating Agents
PNAS February 1, 1961 47 (2) 243;
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Regulation by Coliphage Lambda of the Expression of the Capacity to Synthesize a Sequence of Host Enzymes
PNAS February 1, 1961 47 (2) 243;