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Science, New Series, Vol. 237, No. 4812, Jul. 17, 1987


Previous Issue: New Series, Vol. 237, No. 4811, Jul. 10, 1987
Next Issue: New Series, Vol. 237, No. 4813, Jul. 24, 1987


Front Matter (16 pp.)
The Pacific Century, p. 233
David P. Gardner


Letters
Risk Assessment, p. 235
Raymond Neutra
Risk Assessment: Response, p. 235
Bruce N. Ames; Renae Magaw; Lois S. Gold
Public Health Service Revitalization, p. 235
Cecil H. Fox


Perspective
Adrenal Steroids: New Answers, New Questions, pp. 236-237
John W. Funder


News & Comment
Dismantling the Helium Empire, pp. 238-240
Mark Crawford
GAO Finds Fault with NSF Award, pp. 241-242
John Walsh
Space Station Price Climbs Higher, pp. 242-243
Eliot Marshall
The Boom in Service Industries Will not Solve U.S. Trade Problems, p. 243
Eliot Marshall
Ruling on Heart Drug May Boost Research, p. 244
Marjorie Sun


Research News
Dramatic Results with Brain Grafts, pp. 245-247
Roger Lewin
More Superconductivity Questions than Answers, pp. 248-250
Arthur L. Robinson
No Satellites of Asteroids, p. 250
Richard A. Kerr


Policy Forum
Mathematics Education: A Predictor of Scientific Competitiveness, pp. 251-252+302
Lynn Arthur Steen


Space-Based Radar, pp. 257-262
G. N. Tsandoulas

Artificial Intelligence and Natural Resource Management, pp. 262-267
Robert N. Coulson; L. Joseph Folse; Douglas K. Loh

Cloning of Human Mineralocorticoid Receptor Complementary DNA: Structural and Functional Kinship with the Glucocorticoid Receptor, pp. 268-275
Jeffrey L. Arriza; Cary Weinberger; Gail Cerelli; Tom M. Glaser; Barbara L. Handelin; David E. Housman; Ronald M. Evans


Reports
Bedform Alignment in Directionally Varying Flows, pp. 276-278
David M. Rubin; Ralph E. Hunter
Islet Allograft Survival after a Single Course of Treatment of Recipient with Antibody to L3T4, pp. 278-280
Judith A. Shizuru; Anita K. Gregory; C. Tien-Bao Chao; C. Garrison Fathman
Tissue Distribution and Developmental Expression of the Messenger RNA Encoding Angiogenin, pp. 280-282
Henry L. Weiner; Lynne H. Weiner; Judith L. Swain
Identification by Cell Fusion of Gene Sequences that Interact with Positive Trans-Acting Factors, pp. 283-286
Thomas Lufkin; Carter Bancroft
Three Recessive Loci Required for Insulin-Dependent Diabetes in Nonobese Diabetic Mice, pp. 286-289
Michal Prochazka; Edward H. Leiter; David V. Serreze; Douglas L. Coleman
Modern Turtle Origins: The Oldest Known Cryptodire, pp. 289-291
Eugene S. Gaffney; J. Howard Hutchison; Farish A. Jenkins; Lorraine J. Meeker
Reversible Inhibition of Mammary Gland Growth by Transforming Growth Factor-β, pp. 291-293
Gary B. Silberstein; Charles W. Daniel
Functional Analysis of a Complementary DNA for the 50-Kilodalton Subunit of Calmodulin Kinase II, pp. 293-297
Rochelle M. Hanley; Anthony R. Means; Tomio Ono; Bruce E. Kemp; Karl E. Burgin; Neal Waxham; Paul T. Kelly
Wadi Howar: Paleoclimatic Evidence from an Extinct River System in the Southeastern Sahara, pp. 298-300
H.-J. Pachur; S. Kröpelin


Technical Comments
Neuronal Coding and Robotics, pp. 300-301
Daniel E. Whitney
Neuronal Coding and Robotics: Response, p. 301
Apostolos P. Georgopoulos; Andrew B. Schwartz; Ronald E. Kettner


Book Reviews
Biology as Power, p. 305
Controlling Life
Philip J. Pauly
Review author[s]: John W. Servos
Small-Mammal Studies, pp. 305-306
The Ecology of Woodland Rodents
J. R. Flowerdew; J. Gurnell; J. H. W. Gipps
Review author[s]: William Z. Lidicker
Ciliates, p. 306
The Molecular Biology of Ciliated Protozoa
Joseph G. Gall
Review author[s]: Virginia A. Zakian
Nonchromosomal Genes, p. 307
Extrachromosomal Elements in Lower Eukaryotes
Reed B. Wickner; Alan Hinnebusch; I. C. Gunsalus; Alan Lambowitz; Alexander Hollaender
Review author[s]: Elizabeth H. Blackburn
Some Other Books of Interest, pp. 307-308
The Statistical Consultant in Action
D. J. Hand; B. S. Everitt
Advances in Chronobiology
John E. Pauly; Lawrence E. Scheving
Some Mathematical Questions in Biology: Circadian Rhythms
Nutritional Anthropology
Francis E. Johnston
Review author[s]: K.L.


Back Matter (25 pp.)

Previous Issue: New Series, Vol. 237, No. 4811, Jul. 10, 1987
Next Issue: New Series, Vol. 237, No. 4813, Jul. 24, 1987



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