Articles

 Long Experience

Earl L. Butz
Science 21 February 1975: 598.
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 SI Units and Thermal Energy

Robert D. Freeman
Science 21 February 1975: 598.
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 Letters to the Editor

Chester H. Page
Science 21 February 1975: 598.
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 Letters to the Editor

Roland J. Temple
Science 21 February 1975: 598.
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 Water on Venus and Mars

Harlan J. Smith
Science 21 February 1975: 598-600.
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 The Demese ef the Ne'enderthels: Wes Lengege e Fecter?

Jehn H. Fremlen
Science 21 February 1975: 600.
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 Letters to the Editor

M. L. Wolbarsht
Science 21 February 1975: 600-601.
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 Delaney Clause for Birth Defects

Ernest B. Hook
Science 21 February 1975: 601.
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 Support for Reviews and Data Evaluation

Lewis M. Branscomb
Science 21 February 1975: 603.
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 Of Atoms, Mountains, and Stars: A Study in Qualitative Physics

Victor F. Weisskopf
Science 21 February 1975: 605-612.
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 Metabolic consequences of diving in animals and man

PW Hochachka and KB Storey
Science 21 February 1975: 613-621.
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 Foreign Technology and the United States Economy

Sherman Gee
Science 21 February 1975: 622-626.
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 Strategic Arms Limitation (II): "Leveling Up%" to Symmetry

Luther J. Carter
Science 21 February 1975: 627-632.
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 Biomedical Research Panel Named

B. J. C.
Science 21 February 1975: 629.
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 Pilots Take Unilateral Action on Flying Hazardous Cargo

Constance Holden
Science 21 February 1975: 630.
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 Energy R & D: New Jurisdiction for Reorganized House Committee

John Walsh
Science 21 February 1975: 632-634.
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 NAS Reports on International Biological Program

C. H.
Science 21 February 1975: 633.
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 Vitamin D: Investigations of a New Steroid Hormone

Gina Bari Kolata
Science 21 February 1975: 635-636.
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 Book Reviews

Science 21 February 1975: 637-641.
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 Books Received

Science 21 February 1975: 641-668.
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Isotope Separation in a "Seeded Beam%"

J. B. Anderson and P. Davidovits
Science 21 February 1975: 642-644.
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Energy Conservation Policies of the Federal Energy Office: Economic Demand Analysis

Terry A. Ferrar and Jon P. Nelsona
Science 21 February 1975: 644-646.
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Agglomeration of Ash in Fluidized Beds Gasifying Coal: The Godel Phenomenon

Joseph Yerushalmi, Morris Kolodney, Robert A. Graff, Arthur M. Squires, and Richard D. Harvey
Science 21 February 1975: 646-648.
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Maternal malnutrition and placental transfer of alpha-aminoisobutyric acid in the rat

P Rosso
Science 21 February 1975: 648-650.
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Ornithine decarboxylase activity: control by cyclic nucleotides

CV Byus and DH Russell
Science 21 February 1975: 650-652.
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Mezerein: antileukemic principle isolated from Daphne mezereum L

SM Kupchan and RL Baxter
Science 21 February 1975: 652-653.
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Gene transfer to myxobacterium by Escherichia coli phage P1

D Kaiser and M Dworkin
Science 21 February 1975: 653-654.
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Concanavalin A: its action in inducing Oocyte maturation-inducing substance in starfish follicle cells

J Kubota and H Kanatani
Science 21 February 1975: 654-655.
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Transmissible mink encephalopathy: infectivity of corneal epithelium

RF Marsh and RP Hanson
Science 21 February 1975: 656.
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Water recycling in lactation

P Baverstock and B Green
Science 21 February 1975: 657-658.
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Stroke in rats produced by carotid injection of sodium arachidonate

TW Furlow, Jr and NH Bass
Science 21 February 1975: 658-660.
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Basal forebrain and hypothalamic connection to frontal and parietal cortex in the Rhesus monkey

J Kievit and HG Kuypers
Science 21 February 1975: 660-662.
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Symbolic matching by pigeons: rate of learning complex discriminations predicted from simple discriminations

DE Carter and DA Eckerman
Science 21 February 1975: 662-664.
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Sexual Selection in a Wild Population of the Butterfly Danaus chrysippus L

David A. S. Smith
Science 21 February 1975: 664-665.
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