Articles

 Nurture of the Entrepreneurial Spirit

Peter Dubno
Science 2 August 1968: 419.
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 French "Expert" on Vietnam

A. D. Moinat
Science 2 August 1968: 419.
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 Drug Habits and Immaturity

Leon S. Minckler
Science 2 August 1968: 419.
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 Plea for Fundamental Training

Louis Lykken
Science 2 August 1968: 419-420.
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 Measuring Racial Differences

J. M. Burgers
Science 2 August 1968: 420.
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 Teaching: Who Is Being Rigid?

Ephraim M. Howard
Science 2 August 1968: 420.
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 Frederick II, Natural Scientist

Donald P. Doolittle
Science 2 August 1968: 420.
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 Foreign Associates

Dael Wolfle
Science 2 August 1968: 421.
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 Electron Spin Resonance in Organic Chemistry

Glen A. Russell
Science 2 August 1968: 423-433.
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 Behavior, Hormones, and Hydra

Howard M. Lenhoff
Science 2 August 1968: 434-442.
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 Pharmacology: Its Nature in Medicine

Thomas H. Maren
Science 2 August 1968: 443-444.
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 Congress: Toward a National Policy for the Environment

Bryce Nelson
Science 2 August 1968: 445-446.
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 Research Probe: Rickover Broadsides "Military-Scientific Complex"

Bryce Nelson
Science 2 August 1968: 446-450.
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 Canadian Science Policy: Doubts Raised about Advisory Apparatus

Luther J. Carter
Science 2 August 1968: 450-451.
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 Italian Universities: Reform Indefinitely Delayed

John Walsh
Science 2 August 1968: 451-452.
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 RECENT DEATHS

Science 2 August 1968: 452.
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 Uniformity and Simplicity. A Symposium on the Principle of the Uniformity of Nature, Nov. 1963. Claude C. Albritton, Jr., Ed. Geological Society of America, New York, 1967. x + 99 pp., illus. Paper, $4.50. GSA Special Papers, No. 89

Don L. Eicher
Science 2 August 1968: 453.
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 The Trial of the Assassin Guiteau. Psychiatry and Law in the Gilded Age. Charles E. Rosenberg. University of Chicago Press, Chicago, Ill., 1968. xviii + 289 pp., illus. $5.95

John C. Burnham
Science 2 August 1968: 453-454.
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 The Human Brain in Figures and Tables. A Quantitative Handbook. Samuil M. Blinkov and Il'ya I. Glezer. Translated from the Russian edition (Leningrad, 1964) by Basil Haigh. Basic Books, New York; Plenum, New York, 1968. xxxiv + 482 pp., illus. $25

Paul D. MacLean
Science 2 August 1968: 454-455.
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 Tobacco and Tobacco Smoke. Studies in Experimental Carcinogenesis. Ernest L. Wynder and Dietrich Hoffmann, with chapters by others. Academic Press, New York, 1967. xiv + 730 pp., illus. $29

Charles J. Kensler
Science 2 August 1968: 455-456.
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 Collected Papers of P. L. Kapitza. Vol. 3. D. Ter Haar, Ed. Pergamon, New York, 1967. x + 244 pp., illus. $13.50

Sidney D. Drell
Science 2 August 1968: 456.
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 Human Radiation Cytogenetics. Proceedings of an international symposium, Edinburgh, Oct. 1966. H. J. Evans, W. M. Court Brown, and A. S. McLean, Eds. North-Holland, Amsterdam; Interscience (Wiley), New York, 1967. viii + 218 pp., illus. $11.50

J. Grant Brewen
Science 2 August 1968: 456-457.
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 Preparative Organic Photochemistry. Alexander Schönberg, in cooperation with Günther Otto Schenck and Otto-Albrecht Neumüller. Second edition. Springer-Verlag, New York, 1968. xxiv + 608 pp., illus. $37

N. J. Turro
Science 2 August 1968: 457.
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 Gehölzphysiologie. Horst Lyr, Hans Polster, Hans-Joachim Fiedler, et al. Fischer, Jena, 1967 (distributed in the U.S. by Abel, Portland, Ore.). 444 pp., illus. $12.90

Martin H. Zimmermann
Science 2 August 1968: 457-458.
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 Prostaglandins. U.S. von Euler and Rune Eliasson. Academic Press, New York, 1967. x + 164 pp., illus. $9. Medicinal Chemistry, vol. 8

Peter W. Ramwell
Science 2 August 1968: 458.
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 Plasma Chemistry in Electrical Discharges. F. K. McTaggart. Elsevier, New York, 1967. xii + 246 pp., illus. $17.50. Topics in Inorganic and General Chemistry, vol. 9

Marilyn Alder Marquis
Science 2 August 1968: 458.
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Discrete Light Sources Observed by Satellite OSO-B

J. G. Sparrow and E. P. Ney
Science 2 August 1968: 459-460.
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Triassic Amphibian from Antarctica

Peter J. Barrett, Ralph J. Baillie, and Edwin H. Colbert
Science 2 August 1968: 460-462.
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Meteoroid Hazard near Moon

C. A. Gurtler and Gary W. Grew
Science 2 August 1968: 462-464.
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Tritium Enrichment by Gas-Solid Chromatography: Technique for Low-Level Analysis

John E. Hoy
Science 2 August 1968: 464-465.
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Interferon Inducers in vitro: Difference in Sensitivity to Inhibitors of RNA and Protein Synthesis

Martin S. Finkelstein, Gerald H. Bausek, and Thomas C. Merigan
Science 2 August 1968: 465-467.
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Microspectrophotometry of Photoreceptor Organelles from Eyes of the Prawn Palaemonetes

Timothy H. Goldsmith, Andrew E. Dizon, and Hector R. Fernandez
Science 2 August 1968: 468-469.
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Cytodifferentiation during Insect Metamorphosis: The Galea of Silkmoths

Fotis C. Kafatos and Ned Feder
Science 2 August 1968: 470-472.
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Molecular Aspects of Specific Cell Contact

M. A. Crandall and T. D. Brock
Science 2 August 1968: 473-475.
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Desmosine Biosynthesis: Nature of Inhibition by D-Penicillamine

S. R. Pinnell, G. R. Martin, and E. J. Miller
Science 2 August 1968: 475-476.
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Looking into Teeth with Ultrasound

Sidney Lees and Frank E. Barber
Science 2 August 1968: 477-478.
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Escherichia coli: High Resistance or Dependence on Streptomycin Produced by the Same Allele

Lucio Luzzatto, David Schlessinger, and David Apirion
Science 2 August 1968: 478-479.
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Bivalves: Spatial and Size-Frequency Distributions of Two Intertidal Species

Jeremy B. C. Jackson
Science 2 August 1968: 479-480.
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Selective Stimulation of One of the Mechanisms for Genetic Recombination of Bacteriophage S13

Irwin Tessman
Science 2 August 1968: 481-482.
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Molecular Diversity of the Ribulose-1,5-Diphosphate Carboxylase from Photosynthetic Microorganisms

Louise E. Anderson, G. B. Price, and R. C. Fuller
Science 2 August 1968: 482-484.
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Sensors Monitor Tensions in Transpiration Streams of Trees

G. G. Spomer
Science 2 August 1968: 484-485.
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Bird Orientation: A Method of Study

Dennis L. McDonald
Science 2 August 1968: 486-487.
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Rhodopsin Photoproducts: Effects on Electroretinogram Sensitivity in Isolated Perfused Rat Retina

Robert N. Frank and John E. Dowling
Science 2 August 1968: 487-489.
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Enzymatic Synthesis of Melatonin in Avian Pineal Body: Extraretinal Response to Light

Jean K. Lauber, James E. Boyd, and Julius Axelrod
Science 2 August 1968: 489-490.
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 Evolution of Fossil Invertebrate Communities: Additional Factors

Michael E. Taylor, Peter M. Sheehan, and Peter W. Bretsky
Science 2 August 1968: 491.
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 Virology: United States-Soviet Health Exchange Visit 1967

Timothy E. O'Connor
Science 2 August 1968: 492-493.
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