Articles

 Choices of Parenthood

Moni Nag
Science 16 October 1970: 257.
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 Letter to the Editor

George D. Webb
Science 16 October 1970: 257.
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 Letter to the Editor

Jan Berkhout
Science 16 October 1970: 257.
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 Letter to the Editor

Patrick Butler, Jr.
Science 16 October 1970: 257.
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 Letter to the Editor

Wolfgang Jöchle
Science 16 October 1970: 257-258.
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 Letter to the Editor

Robert McClenon
Science 16 October 1970: 258-259.
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 Letter to the Editor

Charles S. Rebert
Science 16 October 1970: 259.
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 Letter to the Editor

Darrell J. Weber
Science 16 October 1970: 259.
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 Letter to the Editor

Garrett Hardin
Science 16 October 1970: 259-262.
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 Wasting Waste

Marion E. Perkus
Science 16 October 1970: 262-263.
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 Letter to the Editor

M. Lieb
Science 16 October 1970: 263.
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 Vigor of Northern Hardwoods

Stanley M. Filip
Science 16 October 1970: 263.
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 "Pieces of the Action"

Philip H. Abelson
Science 16 October 1970: 265.
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Underground Power Transmission

P. H. Rose
Science 16 October 1970: 267-273.
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Measurement of Fast Biochemical Reactions: Flow and relaxation methods are being used to study chemical processes in biological macromolecules

Alan N. Schechter
Science 16 October 1970: 273-280.
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Semiconductor Radiation Detectors: Basic principles and some uses of a recent tool that has revolutionized nuclear physics are described

Fred S. Goulding and Yvonne Stone
Science 16 October 1970: 280-289.
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Air Pollution Surveillance Systems

George B. Morgan, Guntis Ozolins, and Elbert C. Tabor
Science 16 October 1970: 289-296.
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Earth Strain Measurements with a Laser Interferometer: An 800-meter Michelson interferometer monitors the earth's strain field on the surface of the ground

Jon Berger and R. H. Lovberg
Science 16 October 1970: 296-303.
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 Cancer Research: Senate Consultants Likely to Push for Planned Assault

Robert J. Bazell
Science 16 October 1970: 304-305.
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 Faculty Salaries: 1969-70 Year May Have Ended an Era for Academe

John Walsh
Science 16 October 1970: 306-308.
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 Bureau of Mines: Long Search for New Director Ends

Luther J. Carter
Science 16 October 1970: 309-310.
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 Basic Mechanisms of the Epilepsies. Based on a symposium, Colorado Springs, Colo., Nov. 1968. Herbert H. Jasper, Arthur A. Ward, Jr., and Alfred Pope, Eds. Little, Brown, Boston, 1969. xxvi, 838 pp., illus. $30

Herbert G. Vaughan, Jr.
Science 16 October 1970: 311-312.
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 Diversity and Stability in Ecological Systems. A symposium, Upton, N.Y., May 1969. Biology Department, Brookhaven National Laboratory, Upton, 1969 (available from the Clearinghouse for Federal Scientific and Technical Information, Springfield, Va.). viii, 266 pp., illus. Paper, $3; microfiche, 65¢. Brookhaven Symposia in Biology, No. 22; BNL 50175 (C-56)

Neal Griffith Smith
Science 16 October 1970: 312-313.
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 The Biology of Higher Cryptogams. William T. Doyle. Macmillan, New York, and Collier-Macmillan, London, 1970. x, 166 pp., illus. Paper, $4.95. Current Concepts in Biology Series

Ralph H. Wetmore
Science 16 October 1970: 313-314.
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 Materials Science and Engineering in the United States. Proceedings of the National Colloquy on the Field of Materials, University Park, Pa., April 1969. Rustum Roy, Ed. Pennsylvania State University Press, University Park, 1970. xvi, 180 pp., illus. $9.50

J. K. Hulm
Science 16 October 1970: 314.
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Atmospheric Aerosol: Does a Background Level Exist?

William M. Porch, Robert J. Charlson, and Lawrence F. Radke
Science 16 October 1970: 315-317.
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Humic Substances: Fulvic Acid-Dialkyl Phthalate Complexes and Their Role in Pollution

Gunnar Ogner and Morris Schnitzer
Science 16 October 1970: 317-318.
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Sulfur: Simulated Long-Range Transport in the Atmosphere

Howard Reiquam
Science 16 October 1970: 318-320.
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Chemically Induced Porphyria: Prevention by Prior Treatment with Phenobarbital

Leon Kaufman, Ann Louise Swanson, and Harvey S. Marver
Science 16 October 1970: 320-322.
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Pigeon Control by Chemosterilization: Population Model from Laboratory Results

Joan Sturtevant
Science 16 October 1970: 322-324.
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Water Transport in the Cloaca of Lizards: Active or Passive?

David E. Murrish and Knut Schmidt-Nielsen
Science 16 October 1970: 324-326.
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Demonstration of Biological Activity of a Murine Leukemia Virus of New Zealand Black Mice

Jay A. Levy and Theodore Pincus
Science 16 October 1970: 326-327.
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Cytokinin Activity of Ureidopurine Derivatives Related to a Modified Nucleoside Found in Transfer RNA

William H. Dyson, C. M. Chen, Syed N. Alam, Ross H. Hall, C. I. Hong, and Girish B. Chheda
Science 16 October 1970: 328-330.
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Amygdaloid Nucleus: New Afferent Input from the Vomeronasal Organ

Sarah S. Winans and Frank Scalia
Science 16 October 1970: 330-332.
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Hemagglutination Assay for Antigen and Antibody Associated with Viral Hepatitis

G. N. Vyas and N. R. Shulman
Science 16 October 1970: 332-333.
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Microelectrophoresis of Biogenic Amines on Hypothalamic Thermosensitive Cells

Alexander L. Beckman and Joseph S. Eisenman
Science 16 October 1970: 334-336.
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Estrogenic Induction of Ornithine Decarboxylase in vivo and in vitro

Stanley Cohen, Bert W. O'Malley, and Milos Stastny
Science 16 October 1970: 336-338.
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Apospory in Sorghum bicolor (L.) Moench

W. W. Hanna, K. F. Schertz, and E. C. Bashaw
Science 16 October 1970: 338-339.
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Fine Structure of the Exoerythrocytic Stage of Plasmodium cynomolgi

Thomas Sodeman, Bertram Schnitzer, Thomas Durkee, and Peter Contacos
Science 16 October 1970: 340-341.
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Acetylcholine Concentrations in Rat Brain: Diurnal Oscillation

I. Hanin, R. Massarelli, and E. Costa
Science 16 October 1970: 341-342.
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Brain Enhancement in Tadpoles: Increased DNA Concentration after Somatotrophin or Prolactin

R. K. Hunt and Marcus Jacobson
Science 16 October 1970: 342-344.
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 Mammalian Evolution: Is It Due to Social Subordination?

Miklos D. F. Udvardy and John J. Christian
Science 16 October 1970: 344-346.
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 Advances in Human Genetics and Their Impact on Society

Digamber S. Borgaonkar and Saleem A. Shah
Science 16 October 1970: 347-348.
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 Genetic Diseases and the Quality of Life

Science 16 October 1970: 348.
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 History of Biochemistry and Molecular Biology

John T. Edsall
Science 16 October 1970: 349-351.
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 Nucleic Acid Structure Function Relations

Robert M. Bock
Science 16 October 1970: 351-355.
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 Bioresources of Shallow Water Environments

Phillip E. Greeson
Science 16 October 1970: 355-356.
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