Articles

 ERS: Can the Cost Be Measured?

John E. Lukens
Science 2 May 1969: 494.
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 Economics of Reprints

Thomas D. Brock
Science 2 May 1969: 494.
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 Letters to the Editor

Armand J. Quick
Science 2 May 1969: 494.
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 Letters to the Editor

Wallace C. Ellerbroek
Science 2 May 1969: 494.
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 Chicago: R. I. P

Ellis L. Yochelson
Science 2 May 1969: 494-497.
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 Letters to the Editor

John B. Little
Science 2 May 1969: 494.
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 Fewer Pesticides-More Control

Robert Van Den Bosch
Science 2 May 1969: 497.
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 Smithsonian's Albatross

Stephen Jay Gould
Science 2 May 1969: 497.
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 Public Challenge of Government Action

Eugene B. Skolnikoff
Science 2 May 1969: 499.
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 Infrared Astrophysics

Frank J. Low
Science 2 May 1969: 501-505.
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 Toward Control of Viral Infections of Man

Maurice R. Hilleman
Science 2 May 1969: 506-514.
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 Transplantation Antigens

Barry D. Kahan and Ralph A. Reisfeld
Science 2 May 1969: 514-521.
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 Population Policy for Americans: Is the Government Being Misled?

Judith Blake
Science 2 May 1969: 522-529.
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 Offshore Oil: Channel Blowout Points Up Information Gap

Luther J. Carter
Science 2 May 1969: 530-532.
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 NSF Director: Nixon Admits He Was Wrong

Philip M. Boffey and Bryce Nelson
Science 2 May 1969: 532-534.
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 Confrontation at Stanford: Exit Classified Research

John Walsh
Science 2 May 1969: 534-537.
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 APPOINTMENTS

Science 2 May 1969: 537.
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 RECENT DEATHS

Science 2 May 1969: 537.
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Microbody-Like Organelles in Leaf Cells

Sue Ellen Frederick and Eldon H. Newcomb
Science 2 May 1969: 537.
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 Dumbarton Oaks Conference on the Olmec. Washington, D.C., 1967. Elizabeth P. Benson, Ed. Dumbarton Oaks Research Library and Collection, Washington, 1968. xii + 186 pp., illus. $7.50

Paul Tolstoy
Science 2 May 1969: 538-539.
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 America's First Civilization. Michael D. Coe. Richard B. Woodbury, consultant. Published by American Heritage, New York, 1968, in association with the Smithsonian Institution (distributor, Van Nostrand, Princeton, N. J.). 160 pp., illus. $4.95. Smithsonian Library

Paul Tolstoy
Science 2 May 1969: 538-539.
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 Pleistocene Geology and Biology. With Especial Reference to the British Isles. R. G. West. Wiley, New York, 1968. xiv + 377 pp., illus. $9.50

H. E. Wright, Jr.
Science 2 May 1969: 539.
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 Aspects of the Physiology of Crustacea. A. P. M. Lockwood. Freeman, San Francisco, 1968. x + 328 pp., illus. $9. University Reviews in Biology

F. John Vernberg
Science 2 May 1969: 539-540.
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 Relativity and Cosmology. H. P. Robertson and Thomas W. Noonan. Saunders, Philadelphia, 1968. xxxiv + 460 pp., illus. $16.50

Thornton Page
Science 2 May 1969: 540.
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 Australian Inland Waters and Their Fauna. Eleven Studies. A. H. Weatherley, Ed. Australian National University Press, Canberra, 1967. xvi + 287 pp., illus. $A10.50

Charles R. Goldman
Science 2 May 1969: 540-541.
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 Australian Freshwater Life. The Invertebrates of Australian Inland Waters. W. D. Williams. Sun Books, Melbourne, 1968. x + 262 pp., illus. Paper, $A2.50

Charles R. Goldman
Science 2 May 1969: 540-541.
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 Radical Ions. E. T. Kaiser and L. Kevan, Eds. Interscience (Wiley), New York, 1968. x + 800 pp., illus. $30. Reactive Intermediates in Organic Chemistry

Raymond Chang
Science 2 May 1969: 541-542.
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 Solar Physics. Proceedings of a NATO Advanced Study Institute, Lagonissi, Athens, Greece, 1965. John N. Xanthakis, Ed. Interscience (Wiley), New York, 1967. xvi + 536 pp., illus. $16.50

Frank Q. Orrall
Science 2 May 1969: 542.
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 The Structure of the Quiet Photosphere and the Low Chromosphere. Proceedings of the "Bilderberg," Conference held near Arnhem, Holland, 1967. C. de Jager, Ed. Springer-Verlag, New York; Reidel, Dordrecht, 1968. iv + 240 pp., illus. $9. Reprinted from Solar Physics, Vol. 3, No. 1, 1968

Frank Q. Orrall
Science 2 May 1969: 542.
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 A Glossary of Genetics and Cytogenetics. Classical and Molecular. Rigomar Rieger, Arnd Michaelis, and Melvin M. Green. Third edition (first English edition). Springer-Verlag, New York, 1968. 508 pp., illus. $16.50

Herbert P. Riley
Science 2 May 1969: 542.
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Paleocene Hyracothere from Polecat Bench Formation, Wyoming

Glenn L. Jepsen and Michael O. Woodburne
Science 2 May 1969: 543-547.
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Silicate Spherules from Tunguska Impact Area: Electron Microprobe Analysis

Billy P. Glass
Science 2 May 1969: 547-549.
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Portland Cement: Pseudomorphs of Original Cement Grains Observed in Hardened Pastes

R. Brady Williamson
Science 2 May 1969: 549-551.
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Aluminum-Rich Apatite

D. Jerome Fisher and Duncan McConnell
Science 2 May 1969: 551-553.
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Glycosphingolipids with Lewis Blood Group Activity: Uptake by Human Erythrocytes

Donald M. Marcus and Louise E. Cass
Science 2 May 1969: 553-555.
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Spin Filter Culture: The Propagation of Mammalian Cells in Suspension

P. Himmelfarb, P. S. Thayer, and H. E. Martin
Science 2 May 1969: 555-557.
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Gene Dosage at the Lactate Dehydrogenase b Locus in Triploid and Diploid Teiid Lizards

William B. Neaves and Park S. Gerald
Science 2 May 1969: 557-559.
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Assembly of Protein and Nucleoprotein Particles from Extracted Tobacco Rattle Virus Protein and RNA

J. S. Semancik and D. A. Reynolds
Science 2 May 1969: 559-560.
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Aminoacyl Transfer Ribonucleic Acid Synthetases from Cell-Free Extract of Plasmodium berghei

Judith Ilan and Joseph Ilan
Science 2 May 1969: 560-562.
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Circadian Rhythm of Optic Nerve Impulses Recorded in Darkness from Isolated Eye of Aplysia

Jon W. Jacklet
Science 2 May 1969: 562-563.
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Interaction of Plant Hormones

Robert E. Drury
Science 2 May 1969: 564-565.
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Fissioning in Planarians: Control by the Brain

J. B. Best, A. B. Goodman, and A. Pigon
Science 2 May 1969: 565-566.
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Glucagon-Sensitive Adenyl Cylase in Plasma Membrane of Hepatic Parenchymal Cells

Stephen L. Pohl, Lutz Birnbaumer, and Martin Rodbell
Science 2 May 1969: 566-567.
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Cytogenetic Effects of Cyclamates on Human Cells in vitro

D. Stone, E. Lamson, Y. S. Chang, and K. W. Pickering
Science 2 May 1969: 568-569.
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Hallucinogen-Tranquilizer Interaction: Its Nature

Michael F. Halasz, Jaroslav Formanek, and Amedeo S. Marrazzi
Science 2 May 1969: 569-571.
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Glycine in the Spinal Cord of Cats with Local Tetanus Rigidity

Tsuneo Semba and Masaakira Kano
Science 2 May 1969: 571-572.
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Translocation in Perennial Monocotyledons Tradescantia plants are still functional

Wolfgang Heyser, Walter Eschrich, and Ray F. Evert
Science 2 May 1969: 572-574.
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Lysergic Acid Diethylamide: Effects on the Developing Mouse Lens

J. K. Hanaway
Science 2 May 1969: 574-575.
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DDT Residues Absorbed from Organic Detritus by Fiddler Crabs

W. E. Odum, G. M. Woodwell, and C. F. Wurster
Science 2 May 1969: 576-577.
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Encephalitogenic Protein: Structure

Robert F. Kibler, Raymond Shapira, Sarah McKneally, Julia Jenkins, Pamela Selden, and Frank Chou
Science 2 May 1969: 577-580.
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Plasma Saluretic Activity: Its Nature and Relation to Oxytocin Analogs

E. Sedlakova, B. Lichardus, and J. H. Cort
Science 2 May 1969: 580-582.
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Dye-Sensitized Photooxidation of the Escherichia coli Ribosome

Robert T. Garvin, Gordon R. Julian, and Samuel J. Rogers
Science 2 May 1969: 583-584.
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Preferential Synthesis of Ferritin and Albumin by Different Populations of Liver Polysomes

Sonja J. Hicks, J. W. Drysdale, and H. N. Munro
Science 2 May 1969: 584-585.
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Alcohol Dehydrogenase in Maize: Genetic Basis for Multiple Isozymes

Drew Schwartz
Science 2 May 1969: 585-586.
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Auditory Sequence: Confusion of Patterns Other Than Speech or Music

Richard M. Warren, Charles J. Obusek, Richard M. Farmer, and Roslyn P. Warren
Science 2 May 1969: 586-587.
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 Sound Velocity in Carbon Suboxide

J. K. Hancock and J. C. Decius
Science 2 May 1969: 587-588.
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 Predation and the Origin of Tetrapods

J. Alan Holman
Science 2 May 1969: 588.
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 X-ray Fluorescence Spectrography: Use in Field Archeology

J. D. Frierman, Harry R. Bowman, I. Perlman, and Carl M. York
Science 2 May 1969: 588.
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 Behavior of Water in Vacuum: Implications for "Lunar Rivers"

J. E. M. Adler and J. W. Salisbury
Science 2 May 1969: 589.
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 Coastal Engineering

Maynard Nicholas
Science 2 May 1969: 590-592.
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