Articles

 Population Ethics

Lane J. Johnson
Science 27 October 1972: 347.
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 Letter to the Editor

Gwynn Nettler
Science 27 October 1972: 347.
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 Letter to the Editor

Johnson C. Montgomery
Science 27 October 1972: 347-348.
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 Letter to the Editor

T. D. Perrine
Science 27 October 1972: 348.
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 Letter to the Editor

Olli Vaartaja
Science 27 October 1972: 348.
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 Letter to the Editor

Lloyd G. Humphreys
Science 27 October 1972: 348.
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 Letter to the Editor

Daniel Callahan
Science 27 October 1972: 348-350.
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 Research Natural Areas

Stephen D. Veirs
Science 27 October 1972: 350.
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 Safety at Rocky Flats

E. A. Martell
Science 27 October 1972: 350-352.
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 Understanding Science

Morris Goran
Science 27 October 1972: 352.
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 Energy Conservation

Philip H. Abelson
Science 27 October 1972: 355.
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 Aging: Noncycling Cells an Explanation: Cell and tissue aging is the result of transitions from cycling to noncycling cells

Seymour Gelfant and J. Graham Smith, Jr.
Science 27 October 1972: 357-361.
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Fourier Transform Spectroscopy: New methods dramatically improve the sensitivity of infrared and nuclear magnetic resonance spectroscopy

Edwin D. Becker and T. C. Farrar
Science 27 October 1972: 361-368.
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The Ortega Hypothesis: Citation analysis suggests that only a few scientists contribute to scientific progress

Jonathan R. Cole and Stephen Cole
Science 27 October 1972: 368-375.
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 Scientists in Politics: A Late Entry for Nixon's Group

Robert Gillette
Science 27 October 1972: 375-377.
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 Medicine at Michigan State (IV): Osteopaths and Allopaths

John Walsh
Science 27 October 1972: 377-380.
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 Health Fad Underworld Surveyed

N. W.
Science 27 October 1972: 379.
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 Europe and the Environment: Cooperation a Distant Prospect

Dominique Verguèse
Science 27 October 1972: 381-383.
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 Nadar's Profiles Aimed at Voters, Not Headlines

N. W.
Science 27 October 1972: 382.
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 The 1972 Nobel Prize for Physiology or Medicine

John J. Cebra
Science 27 October 1972: 384-386.
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 Magnetohydrodynamic Power: More Efficient Use of Coal

Allen L. Hammond
Science 27 October 1972: 386-387.
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 Frog Shortage Possible This Winter

T. H. M.
Science 27 October 1972: 387.
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 Polychlorinated Biphenyls: Still Prevalent, but Less of a Problem

Thomas H. Maugh, II
Science 27 October 1972: 388.
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 The Biological Domain

Thomas W. Schoener
Science 27 October 1972: 389-391.
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 II. Analogues in the Social Sciences

Scott A. Boorman
Science 27 October 1972: 391-394.
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 Nongcun yisheng shouce (Peasant Village Physician's Handbook). Compiled by the Medical Revolutionary Committee of Hunan. People's Hygiene Press, Peking, ed. 4, 1971. 1200 pp. Soft plastic cover

Hans Ågren
Science 27 October 1972: 394-395.
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Precision Geodesy via Radio Interferometry

H. F. Hinteregger, I. I. Shapiro, D. S. Robertson, C. A. Knight, R. A. Ergas, A. R. Whitney, A. E. E. Rogers, J. M. Moran, T. A. Clark, and B. F. Burke
Science 27 October 1972: 396-398.
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Quaternary Paleotemperatures and the Duration of the High-Temperature Intervals

Cesare Emiliani
Science 27 October 1972: 398-401.
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Lead Aerosol Baseline: Concentration at White Mountain and Laguna Mountain, California

Tsaihwa J. Chow, John L. Earl, and Carrie B. Snyder
Science 27 October 1972: 401-402.
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Siliceous Algal and Bacterial Stromatolites in Hot Spring and Geyser Effluents of Yellowstone National Park

Malcolm R. Walter, John Bauld, and Thomas D. Brock
Science 27 October 1972: 402-405.
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Polar Motion from Laser Tracking of Artificial Satellites

David E. Smith, Ronald Kolenkiewicz, Peter J. Dunn, Henry H. Plotkin, and Thomas S. Johnson
Science 27 October 1972: 405-406.
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Interferometric Observations of an Artificial Satellite

R. A. Preston, R. Ergas, H. F. Hinteregger, C. A. Knight, D. S. Robertson, I. I. Shapiro, A. R. Whitney, A. E. E. Rogers, and T. A. Clark
Science 27 October 1972: 407-409.
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Incised River Meanders: Evolution in Simulated Bedrock

R. G. Shepherd
Science 27 October 1972: 409-411.
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Survival of Mouse Embryos Frozen to -196° and -269°C

D. G. Whittingham, S. P. Leibo, and P. Mazur
Science 27 October 1972: 411-414.
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Brain Serotonin Content: Physiological Regulation by Plasma Neutral Amino Acids

John D. Fernstrom and Richard J. Wurtman
Science 27 October 1972: 414-416.
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Thyrotropin Releasing Hormone: Enhancement of Dopa Activity by a Hypothalamic Hormone

N. P. Plotnikoff, A. J. Prange, Jr., G. R. Breese, M. S. Anderson, and I. C. Wilson
Science 27 October 1972: 417-418.
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Arthropod Molting Hormone: Radioimmune Assay

David W. Borst and John D. O'Connor
Science 27 October 1972: 418-419.
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Coherin: A New Peptide of the Bovine Neurohypophysis with Activity on Gastrointestinal Motility

Irving Goodman and Robert B. Hiatt
Science 27 October 1972: 419-421.
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Eyes Have a Role in Photoperiodic Control of Sexual Activity of Coturnix

K. Homma, W. O. Wilson, and T. D. Siopes
Science 27 October 1972: 421-423.
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Echinoid Spawning Induced by a Radial Nerve Factor

Roger C. Cochran and Franz Engelmann
Science 27 October 1972: 423-424.
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 The Growth Question and Environmental Policy Issues: Limits to Growth?

Science 27 October 1972: 425-426.
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