Articles

 Evolution, epidemiology, and recombinant DNA

BD Davis
Science 6 August 1976: 442.
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 Notable Americans

BARBARA SICHERMAN
Science 6 August 1976: 442.
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 Preserving National Forests

V. DEMOULIN, J. DUVIGNEAUD, and J. LAMBINON
Science 6 August 1976: 442.
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Global Cooling?

Paul E. Damon and Steven M. Kunen
Science 6 August 1976: 447-453.
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Calibrating Duckweeds: Light, Clocks, Metabolism, Flowering

William S. Hillman
Science 6 August 1976: 453-458.
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 Symbiosis Between the Earth and Humankind

René Dubos
Science 6 August 1976: 459-462.
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 Carter as Scientist or Engineer: What Are His Credentials?

NICHOLAS WADE
Science 6 August 1976: 462-463.
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 New CIA—Research, Anyone?

DEBORAH SHAPLEY
Science 6 August 1976: 463.
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 If I Were the Science Adviser: Some Luminaries Have Their Say

CONSTANCE HOLDEN
Science 6 August 1976: 464-467.
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 Stever Gets Delayed Nod

JOHN WALSH and CONSTANCE HOLDEN
Science 6 August 1976: 465.
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 New Data Suggest Decline in Industry R & D

DEBORAH SHAPLEY
Science 6 August 1976: 466.
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 Confidentiality: Court Declares Researcher Can Protect Sources

BARBARA J. CULLITON
Science 6 August 1976: 467-469.
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 Recombinant DNA at White House

NICHOLAS WADE
Science 6 August 1976: 468.
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 Computational Chemistry: Getting More from a Minicomputer

ARTHUR L. ROBINSON
Science 6 August 1976: 470-472.
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 Chemists' First Try at Big Science

ARTHUR L. ROBINSON
Science 6 August 1976: 471.
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 Scientists and Lawyers Explore Weather Modification at AAAS-ABA Conference

WILLIAM A. THOMAS
Science 6 August 1976: 473-474.
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 Interciencia Welcomed at D.C. Reception

Science 6 August 1976: 473.
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 Puerto Ricans Investigate Underrepresentation in Science Professions

JANET WELSH BROWN and SHIRLEY MAHALEY MALCOM
Science 6 August 1976: 474-475.
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 Habitat: A Festive Air, Serious Business

CURTIS L. CARTER
Science 6 August 1976: 475-512.
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 On Ptolemy as the Greatest Astronomer of Antiquity

OWEN GINGERICH
Science 6 August 1976: 476-477.
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 Changes in Biology

J. T. BONNER
Science 6 August 1976: 477-478.
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 Perceptual Development

ROBERT B. McCALL and STEVEN J. COOL
Science 6 August 1976: 478-479.
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 Books Received

Science 6 August 1976: 479.
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Light Scattering by Irregular Randomly Oriented Particles

PETR CHLEK, G. W. GRAMS, and R. G. PINNICK
Science 6 August 1976: 480-482.
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Hooked Trichomes: A Physical Plant Barrier to a Major Agricultural Pest

ERIC A. PILLEMER and WARD M. TINGEY
Science 6 August 1976: 482-484.
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Fog Catchment Sand Trenches Constructed by Tenebrionid Beetles, Lepidochora, from the Namib Desert

MARY K. SEELY and WILLIAM J. HAMILTON, III
Science 6 August 1976: 484-486.
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Combustion Metamorphism in Southern California

Y. K. BENTOR and M. KASTNER
Science 6 August 1976: 486-488.
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Plutonium hazard in respirable dust on the surface of soil

CJ Johnson, RR Tidball, and RC Severson
Science 6 August 1976: 488-490.
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Screwworm eradication: inadvertent selection for noncompetitive ecotypes during mass rearing

GL Bush, RW Neck, and GB Kitto
Science 6 August 1976: 491-493.
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Side chain metabolism of 25-hydroxy-[26,27-14C] vitamin D3 and 1,25-dihydroxy-[26,27-14C] vitamin D3 in vivo

D Harnden, R Kumar, MF Holick, and HF Deluca
Science 6 August 1976: 493-494.
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Aspergilus flavus and aflatoxin in Iowa corn before harvest

EB Lillehoj, DI Fennell, and WF Kwolek
Science 6 August 1976: 495-496.
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Elevated plasmz zinc: a heritable anomaly

JC Smith, JA Zeller, ED Brown, and SC Ong
Science 6 August 1976: 496-498.
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Markers for detection of supplementation in narcotic programs--deuterium-labeled methadone

JC Hsia, JC Tam, HG Giles, CC Leung, H Marcus, JA Marshman, and AE Leblanc
Science 6 August 1976: 498-500.
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A multistable movement display: evidence for two separate motion systems in human vision

A Pantle and L Picciano
Science 6 August 1976: 500-502.
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Constancy and uniqueness in a large population of small interneurons

C Goodman
Science 6 August 1976: 502-504.
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Abolition of direction selectivity in the visual cortex of the cat

M Cynader and G Chernenko
Science 6 August 1976: 504-505.
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Magnetic Direction Finding: Evidence for Its Use in Migratory Indigo Buntings

STEPHEN T. EMLEN, WOLFGANG WILTSCHKO, NATALIE J. DEMONG, ROSWITHA WILTSCHKO, and SIMON BERGMAN
Science 6 August 1976: 505-508.
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Biogeography of Free-Living Soil Nematodes from the Perspective of Plate Tectonics

V. R. FERRIS, C. G. GOSECO, and J. M. FERRIS
Science 6 August 1976: 508-510.
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Sustained tolerance to a specific effect of ethanol on posttetanic potentiation in Aplysia

ME Traynor, PB Woodson, WT Schlapfer, and SH Barondes
Science 6 August 1976: 510-511.
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 New Publications

Science 6 August 1976: 512.
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