Articles

 Automotive Emissions

Alan C. Nixon
Science 7 December 1973: 967.
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 Energy Conservation

Aaron Blair
Science 7 December 1973: 967.
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 Letter to the Editor

Freeman A. Ford
Science 7 December 1973: 967-968.
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 Letter to the Editor

A. Stuart Denholm
Science 7 December 1973: 968.
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 Letter to the Editor

Sara S. Bretsky
Science 7 December 1973: 968-970.
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 Letter to the Editor

Charles A. Berg
Science 7 December 1973: 970-971.
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 Prevention of Cancer

Philip H. Abelson
Science 7 December 1973: 973.
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 Seaweeds: Their Productivity and Strategy for Growth: The role of large marine algae in coastal productivity is far more important than has been suspected

K. H. Mann
Science 7 December 1973: 975-981.
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 Human Impact of the Managua Earthquake: Transitional societies are peculiarly vulnerable to natural disasters

Robert W. Kates, Daniel J. Amaral, J. Eugene Haas, Robert A. Olson, Reyes Ramos, and Richard Olson
Science 7 December 1973: 981-990.
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The Relative Operating Characteristic in Psychology: A technique for isolating effects of response bias finds wide use in the study of perception and cognition

John A. Swets
Science 7 December 1973: 990-1000.
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 Sloan-Kettering: The Trials of an Apricot Pit-1973

Barbara J. Culliton
Science 7 December 1973: 1000-1003.
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 Protection Sought for Satirists and Whistle Blowers

Nicholas Wade
Science 7 December 1973: 1002-1003.
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 Lexington Narcotics Hospital: A Special Sort of Alma Mater

John Walsh
Science 7 December 1973: 1004-1008.
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 RANN Symposium: NSF Puts Its Brainchild on Display

Constance Holden
Science 7 December 1973: 1006.
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Astronomy in Britain: Fogged Up by Cloudy Skies and Schisms

Nicholas Wade
Science 7 December 1973: 1008.
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 Repeated DNA: Molecular Genetics of Higher Organisms

Gina Bari Kolata
Science 7 December 1973: 1009-1011.
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 Book Reviews

Science 7 December 1973: 1012-1016.
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 Books Received

Science 7 December 1973: 1016.
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Glacier in Chile Ended a Major Readvance about 36,000 Years Ago: Some Global Comparisons

J. H. Mercer and C. A. Laugenie
Science 7 December 1973: 1017-1019.
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Radiation Belts of Jupiter

Kent G. Stansberry and R. Stephen White
Science 7 December 1973: 1020-1021.
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Jupiter's Radiation Belts: Can Pioneer 10 Survive?

W. N. Hess, T. J. Birmingham, and G. D. Mead
Science 7 December 1973: 1021-1022.
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Hyperactivity and Brain Catecholamines in Lead-Exposed Developing Rats

Mitchell W. Sauerhoff and I. Arthur Michaelson
Science 7 December 1973: 1022-1024.
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Electrophoretic Variation in Escherichia coli from Natural Sources

Roger Milkman
Science 7 December 1973: 1024-1026.
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Hepatitis A: Detection by Immune Electron Microscopy of a Viruslike Antigen Associated with Acute Illness

Stephen M. Feinstone, Albert Z. Kapikian, and Robert H. Purcell
Science 7 December 1973: 1026-1028.
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Probit Transformation: Improved Method for Defining Synchrony of Cell Cultures

William G. Hagar and Thomas R. Punnett
Science 7 December 1973: 1028-1030.
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Renin-Angiotensin Role in Thirst: Paradoxical Enhancement of Drinking by Angiotensin Converting Enzyme Inhibitor

David Lehr, H. Warren Goldman, and Paul Casner
Science 7 December 1973: 1031-1034.
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Color Changes, Unusual Melanosomes, and a New Pigment from Leaf Frogs

Joseph T. Bagnara, John D. Taylor, and Giuseppe Prota
Science 7 December 1973: 1034-1035.
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Neural Correlate of Perceptual Adaptation to Gratings

L. Maffei, A. Fiorentini, and S. Bisti
Science 7 December 1973: 1036-1038.
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Stimulus Change Contemporaneous with Food Presentation Maintains Responding in the Presence of Free Food

R. Frank Wallace, Steven Osborne, James Norborg, and Edmund Fantino
Science 7 December 1973: 1038-1039.
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Long-Term Sensitization of a Defensive Withdrawal Reflex in Aplysia

Harold M. Pinsker, Wayne A. Hening, Thomas J. Carew, and Eric R. Kandel
Science 7 December 1973: 1039-1042.
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 Heritability of IQ by Social Class: Evidence Inconclusive

Gordon Allen, Karen D. Pettigrew, L. Erlenmeyer-Kimling, Samuel E. Stern, and Sandra Scarr-Salapatek
Science 7 December 1973: 1042-1047.
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 Challenges for Science Education

Don I. Phillips
Science 7 December 1973: 1048-1049.
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