- Roger Revelle
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Introduction to the Symposium on the International Biological Program
PNAS 1968 60: 1-4.
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- Frederick E. Smith
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The International Biological Program and the Science of Ecology
PNAS 1968 60: 5-11.
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- William S. Laughlin
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Adaptability and Human Genetics
PNAS 1968 60: 12-21.
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- Theodore H. Hubbell
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The Biology of Islands
PNAS 1968 60: 22-32.
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- O. H. Frankel
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Human Welfare and International Cooperation
PNAS 1968 60: 33-41.
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- Stanley A. Cain
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Conservation, the Federal Government, and the International Biological Program
PNAS 1968 60: 42-50.
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- Harland W. Epps
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On Stellar Rotation
PNAS 1968 60: 51-58.
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- Linus Pauling
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The Resonating-Valence-Bond Theory of Superconductivity: Crest Superconductors and Trough Superconductors
PNAS 1968 60: 59-65.
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- David A. Freedman
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On the Convergence of Approximants to a Markov Chain, I
PNAS 1968 60: 66-72.
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- R. D. Schafer
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On Generalized Standard Algebras
PNAS 1968 60: 73-74.
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- Yung-Chow Wong
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Sectional Curvatures of Grassmann Manifolds
PNAS 1968 60: 75-79.
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- N. B. Grover and George H. Weiss
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Theoretical Distribution of Two-Dimensional Projections in Electron-Microscopic Sections
PNAS 1968 60: 80-85.
[PDF]
- G. Navon, R. G. Shulman, B. J. Wyluda, and T. Yamane
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Nuclear Magnetic Resonance Studies of the Active Site of Carboxypeptidase A
PNAS 1968 60: 86-91.
[PDF]
- Jack S. Cohen and Oleg Jardetzky
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Nuclear Magnetic Resonance Studies of the Structure and Binding Sites of Enzymes, II. Spectral Assignments and Inhibitor Binding in Hen Egg-White Lysozyme
PNAS 1968 60: 92-99.
[PDF]
- J. J. Katz, K. Ballschmiter, M. Garcia-Morin, H. H. Strain, and R. A. Uphaus
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Electron Paramagnetic Resonance of Chlorophyll-Water Aggregates
PNAS 1968 60: 100-107.
[PDF]
- William C. Galley and Lubert Stryer
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Triplet-Triplet Energy Transfer in Proteins as a Criterion of Proximity
PNAS 1968 60: 108-114.
[PDF]
- David P. C. Lloyd
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Action of Hydrogenated Ergot Alkaloids upon Transmission to Sweat Glands in the Cat
PNAS 1968 60: 115-117.
[PDF]
- C. S. Spyropoulos and T. Teorell
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The Dependence of Nerve Membrane Potentials upon Extracellular Ionic Strength
PNAS 1968 60: 118-125.
[PDF]
- Robert E. Pollack, Howard Green, and George J. Todaro
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Growth Control in Cultured Cells: Selection of Sublines with Increased Sensitivity to Contact Inhibition and Decreased Tumor-Producing Ability
PNAS 1968 60: 126-133.
[PDF]
- Julian B. Fleischman, Dietmar G. Braun, and Richard M. Krause
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Streptococcal Group-Specific Antibodies: Occurrence of a Restricted Population Following Secondary Immunization
PNAS 1968 60: 134-139.
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- Richard M. Eakin and Jean L. Brandenburger
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Localization of Vitamin A in the Eye of a Pulmonate Snail
PNAS 1968 60: 140-145.
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- Michael Menaker and Henry Keatts
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Extraretinal Light Perception in the Sparrow, II. Photoperiodic Stimulation of Testis Growth
PNAS 1968 60: 146-151.
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- Eric H. Davidson, Marco Crippa, and Alfred E. Mirsky
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Evidence for the Appearance of Novel Gene Products during Amphibian Blastulation
PNAS 1968 60: 152-159.
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- Brooks Low
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Formation of Merodiploids in Matings with a Class or Rec- Recipient Strains of Escherichia coli K12
PNAS 1968 60: 160-167.
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- A. M. Chakrabarty, C. F. Gunsalus, and I. C. Gunsalus
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Transduction and the Clustering of Genes in Fluorescent Pseudomonads
PNAS 1968 60: 168-175.
[PDF]
- Mahlon F. Miller and Ralph W. G. Wyckoff
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Proteins in Dinosaur Bones
PNAS 1968 60: 176-178.
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- Reuben Matalon and Albert Dorfman
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The Structure of Acid Mucopolysaccharides Produced by Hurler Fibroblasts in Tissue Culture
PNAS 1968 60: 179-185.
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- J. C. Beck, J. R. Mattoon, D. C. Hawthorne, and F. Sherman
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Genetic Modification on Energy-Conserving Systems in Yeast Mitochondria
PNAS 1968 60: 186-193.
[PDF]
- Kwen-Sheng Chiang
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Physical Conservation of Parental Cytoplasmic DNA through Meiosis in Chlamydomonas Reinhardi
PNAS 1968 60: 194-200.
[PDF]
- Clifford Woodward and E. A. Davidson
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Structure-Function Relationships of Protein Polysaccharide Complexes: Specific Ion-Binding Properties
PNAS 1968 60: 201-205.
[PDF]
- Solomon H. Snyder and Elliott Richelson
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Psychedelic Drugs: Steric Factors that Predict Psychotropic Activity
PNAS 1968 60: 206-213.
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- David M. Trilling and H. Vasken Aposhian
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Sequential Cleavage of Dinucleotides from DNA by Phage SP3 Dnase
PNAS 1968 60: 214-221.
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- Beverly Peterkofsky and Gordon M. Tomkins
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Evidence for the Steroid-Induced Accumulation of Tyrosine-Aminotransferase Messenger RNA in the Absence of Protein Synthesis
PNAS 1968 60: 222-228.
[PDF]
- Stuart M. Heywood and Mark Nwagwu
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De Novo Synthesis of Myosin in a Cell-Free System
PNAS 1968 60: 229-234.
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- Y. Suyama and Karen Miura
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Size and Structural Variations of Mitochondrial DNA
PNAS 1968 60: 235-242.
[PDF]
- Ronald W. Davis and Norman Davidson
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Electron-Microscopic Visualization of Deletion Mutations
PNAS 1968 60: 243-250.
[PDF]
- G. Hotz and A. Muller
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The Action of Heat and Ionizing Radiation on the Infectivity of Isolated
 X-174 DNA
PNAS 1968 60: 251-257.
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- Lowell Brenneman and S. J. Singer
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The Generation of Antihapten Antibodies with Electrophoretically Homogeneous L Chains
PNAS 1968 60: 258-264.
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- M. Mandel and A. Berg
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Cohesive Sites and Helper Phage Function of P2, Lambda, and 186 DNA's
PNAS 1968 60: 265-268.
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- Wieland Gevers, Horst Kleinkauf, and Fritz Lipmann
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The Activation of Amino Acids for Biosynthesis of Gramicidin S
PNAS 1968 60: 269-276.
[PDF]
- David E. Green, Norman F. Haard, Giorgio Lenaz, and H.Israel Silman
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On the Noncatalytic Proteins of Membrane Systems
PNAS 1968 60: 277-284.
[PDF]
- N. K. Gupta, E. Ohtsuka, H. Weber, S. H. Chang, and H.G. Khorana
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Studies on Polynucleotides, LXXXVII. The Joining of Short Deoxyribopolynucleotides by DNA-Joining Enzymes
PNAS 1968 60: 285-292.
[PDF]
- L. J. Deftos, M. R. Lee, and J. T. Potts
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A Radioimmunoassay for Thyrocalcitonin
PNAS 1968 60: 293-299.
[PDF]
- Robert W. Holley and Josephine A. Kiernan
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"Contact Inhibition" of Cell Division in 3T3 Cells
PNAS 1968 60: 300-304.
[PDF]
- Fumio Imamoto
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On the Initiation of Transcription of the Tryptophan Operon in Escherichia coli
PNAS 1968 60: 305-312.
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- Robert F. Baker and Charles Yanofsky
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The Periodicity of RNA Polymerase Initiations: A New Regulatory Feature of Transcription
PNAS 1968 60: 313-320.
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- B. A. Bassel
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Cell-Free Protein Synthesis Directed by Qß -RNA and by Two Specific Fragments
PNAS 1968 60: 321-328.
[PDF]
- M. Oishi
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Studies of DNA Replication in vivo, I. Isolation of the First Intermediate of DNA Replication in Bacteria as Single-Stranded DNA
PNAS 1968 60: 329-336.
[PDF]
- Roderic B. Park and A. O. A. Pheifhofer
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The Continued Presence of Quantasomes in Ethylenediaminetetraacetate-Washed Chloroplast Lamellae
PNAS 1968 60: 337-343.
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Addendum: Studies on Polynucleotides, LXXXIV. On the Role of Ribosomal Subunits in Protein Synthesis
PNAS 1968 60: 344.
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Addendum: The Formation and Stabilization of 30S and 50S Ribosome Couples in Escherichia coli
PNAS 1968 60: 344.
[Access through JSTOR]
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Erratum: The in vitro Induction of an Increase in Cell Multiplication and Cellular Life Span by the Water-Soluble Carcinogen Dimethylnitrosamine
PNAS 1968 60: 344.
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