Articles

 Radioactive Materials: Problems under Scrutiny

Samuel A. Reynolds
Science 12 March 1971: 955.
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 Too Little Gene Exchange

H. Garrison Wilkes
Science 12 March 1971: 955.
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 Letters

P. M. Austin Bourke
Science 12 March 1971: 955-956.
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 People Who See Flying Saucers

George L. Cowgill
Science 12 March 1971: 956-957.
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 Letters

Robert A. Gordon
Science 12 March 1971: 957.
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 Letters

Peter Dubno
Science 12 March 1971: 957.
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 Letters

Donald I. Warren
Science 12 March 1971: 957-959.
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 Bomb Craters

Arthur H. Westing
Science 12 March 1971: 959.
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 "Before" and "After" Photos

R. E. McDermott
Science 12 March 1971: 959.
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 Interdisciplinary Problem-Oriented Research in the University

F. A. Long
Science 12 March 1971: 961.
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Molecular Biology of Synaptic Receptors

Eduardo De Robertis
Science 12 March 1971: 963-971.
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 Taming Technology

Lewis M. Branscomb
Science 12 March 1971: 972-977.
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 Activist Youth of the 1960's: Summary and Prognosis

John L. Horn and Paul D. Knott
Science 12 March 1971: 977-985.
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 Unemployment: What Nixon Is/Isn't Doing to Help Jobless Scientists

Philip M. Boffey
Science 12 March 1971: 985-987.
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 M.I.T.: Wiesner to Succeed Johnson in Presidency, Office Restructured

John Walsh
Science 12 March 1971: 987-989.
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 Arid Land Agriculture: Shaikh up in Arizona Research

Robert J. Bazell
Science 12 March 1971: 989-990.
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 Space Shuttle: A Giant Step for NASA and the Military?

Robert Gillette
Science 12 March 1971: 991-993.
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 Stellar Old Age: White Dwarfs, Neutron Stars, and Black Holes

Allen L. Hammond
Science 12 March 1971: 994-995.
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 Book Reviews

Science 12 March 1971: 996-1004.
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 Books Received

Science 12 March 1971: 1004-1005.
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Nitrogen, Phosphorus, and Eutrophication in the Coastal Marine Environment

John H. Ryther and William M. Dunstan
Science 12 March 1971: 1008-1013.
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Carbon Monoxide: Its Role in Photochemical Smog Formation

Karl Westberg, Norman Cohen, and K. W. Wilson
Science 12 March 1971: 1013-1015.
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Sulfur Isotopes in Swaziland System Barites and the Evolution of the Earth's Atmosphere

Eugene C. Perry, Jr., Jan Monster, and Thomas Reimer
Science 12 March 1971: 1015-1016.
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Perinatal Undernutrition: Accumulation of Catecholamines in Rat Brain

William J. Shoemaker and Richard J. Wurtman
Science 12 March 1971: 1017-1019.
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Scleroderma and the Subcutaneous Tissue

Raul Fleischmajer, Victor Damiano, and Alexander Nedwich
Science 12 March 1971: 1019-1021.
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Extracellular Recordings from Human Retinal Ganglion Cells

George W. Weinstein, Robert R. Hobson, and Frank H. Baker
Science 12 March 1971: 1021-1022.
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Decrease in Adrenal Tyrosine Hydroxylase and Increase in Norepinephrine Synthesis in Rats Given L-Dopa

Wallace Dairman and Sidney Udenfriend
Science 12 March 1971: 1022-1024.
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Scanning Electron Microscopic Observations of Surface Structure of Isolated Human Chromosomes

H. M. Golomb and G. F. Bahr
Science 12 March 1971: 1024-1026.
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Primitive Earth Synthesis of Nicotinic Acid Derivatives

Nadav Friedmann, Stanley L. Miller, and Robert A. Sanchez
Science 12 March 1971: 1026-1027.
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Bilateral Symmetry in Chick Embryo Determination by Gravity

Shimshon Kochav and Hefzibah Eyal-Giladi
Science 12 March 1971: 1027-1029.
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Photoperiod Evidence in the Introduction of Xanthium (Cocklebur) to Australia

Calvin McMillan
Science 12 March 1971: 1029-1031.
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Possible Etiology of Schizophrenia: Progressive Damage to the Noradrenergic Reward System by 6-Hydroxydopamine

Larry Stein and C. David Wise
Science 12 March 1971: 1032-1036.
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Dissociation of Impairment after Lateral and Medial Prefrontal Lesions in Dogs

Jadwiga Dabrowska
Science 12 March 1971: 1037-1038.
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Development of Polysensory Responses in Association Cortex of Kitten

Kathleen S. Mayers, Richard T. Robertson, Edwin W. Rubel, and Richard F. Thompson
Science 12 March 1971: 1038-1040.
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 Specialization of Rabbit Reticulocyte Transfer RNA Content for Hemoglobin Synthesis: Erratum

Science 12 March 1971: 1040.
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 Gordon Research Conferences

Alexander M. Cruickshank
Science 12 March 1971: 1041-1058.
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