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Science, New Series, Vol. 245, No. 4923, Sep. 15, 1989


Previous Issue: New Series, Vol. 245, No. 4922, Sep. 8, 1989
Next Issue: New Series, Vol. 245, No. 4924, Sep. 22, 1989


Front Matter (42 pp.)
The Human-Voyager 2 Collaboration, p. 1161
Philip H. Abelson


Letters
Sleep Research, p. 1165
Ronald Szymusiak; Dennis McGinty; Maurice B. Sterman
``Soul-Searching'' and China, p. 1165
Avram Goldstein
Carelessness, or Good Faith?, pp. 1165-1166
Heinrich K. Erben
O'Toole's Charges, pp. 1166-1167
Herman N. Eisen
Caldera Unrest, p. 1167
C. G. Newhall; D. Dzurisin


Erratum: Fetal Tissue Transplant Win U.K. Approval, p. 1167
Erratum: Fallout From Pacific Reaches Congress, p. 1167


News & Comment
The Missing Crystallography Data, pp. 1179-1181
Marcia Barinaga
Help Wanted: Director, NIH, p. 1181
Barbara J. Culliton
High-Energy Management Stirs up Energy Research, pp. 1182-1183
Mark Crawford
Smithsonian, Indian Leaders Call a Truce, pp. 1184-1186
Eliot Marshall
White House, Congress Push Computer Plan, p. 1186
Marjorie Sun


Research News
In Search of the Plastic Potato, pp. 1187-1189
Robert Pool
Say it Again in Plain Algebra, pp. 1190-1191
Barry A. Cipra
Computer-Age Stargazing, p. 1191
M. Mitchell Waldrop
Briefings, p. 1192
Constance Holden


History of Meteorites from the Moon Collected in Antarctica, pp. 1197-1202
O. Eugster

Experiments with High-Energy Neutrino Beams, pp. 1202-1208
J. Steinberger

Visuomotor Coordination in Reaching and Locomotion, pp. 1209-1210
A. P. Georgopoulos; S. Grillner

High-Resolution Microwave Images of Saturn, pp. 1211-1215
A. W. Grossman; D. O. Muhleman; G. L. Berge


Reports
A Near-Optimum Parallel Planarization Algorithm, pp. 1221-1223
Yoshiyasu Takefuji; Kuo-Chun Lee
Shear Forces in Molecularly Thin Films, pp. 1223-1225
Martin Schoen; Charles L. Rhykerd; Dennis J. Diestler; John H. Cushman
Molecular Structure of DNA by Scanning Tunneling Microscopy, pp. 1226-1227
A. Cricenti; S. Selci; A. C. Felici; R. Generosi; E. Gori; W. Djaczenko; G. Chiarotti
Aerosols, Cloud Microphysics, and Fractional Cloudiness, pp. 1227-1230
Bruce A. Albrecht
Evidence for a Heterogeneous Upper Mantle in the Cabo Ortegal Complex, Spain, pp. 1231-1233
Jacques Girardeau; José Ignaki Gil Ibarguchi; Nejib Ben Jamaa
Targeting of Nonexpressed Genes in Embryonic Stem Cells Via Homologous Recombination, pp. 1234-1236
Randall S. Johnson; Morgan Sheng; Michael E. Greenberg; Richard D. Kolodner; Virginia E. Papaioannou; Bruce M. Spiegelman
Foregut Fermentation in the Hoatzin, a Neotropical Leaf-Eating Bird, pp. 1236-1238
Alejandro Grajal; Stuart D. Strahl; Rodrigo Parra; Maria Gloria Dominguez; Alfredo Neher
Neutrophil Mac-1 and MEL-14 Adhesion Proteins Inversely Regulated by Chemotactic Factors, pp. 1238-1241
Takashi Kei Kishimoto; Mark A. Jutila; Ellen Lakey Berg; Eugene C. Butcher
T Cell Receptor Gene Trans-Rearrangements: Chimeric γ-δ Genes in Normal Lymphoid Tissues, pp. 1242-1246
Benjamin Tycko; James D. Palmer; Jeffrey Sklar
Activation of Bacterial Porin Gene Expression by a Chimeric Signal Transducer in Response to Aspartate, pp. 1246-1249
Ryutaro Utsumi; Renee E. Brissette; Arfaan Rampersaud; Steven A. Forst; Kenji Oosawa; Masayori Inouye
Acetylcholine and GABA Mediate Opposing Actions on Neuronal Chloride Channels in Crayfish, pp. 1249-1251
Cindy Pfeiffer-Linn; Raymon M. Glantz


Book Reviews
A Reasonable Outcome, p. 1259
The Politics of Earthquake Prediction
Richard Stuart Olson
Review author[s]: Daniel Serwer
Views from Chicago, pp. 1259+1261
Memoirs of an Unregulated Economist
George J. Stigler
Review author[s]: William J. Baumol
Geologic Collisions, pp. 1261-1262
Impact Cratering
H. J. Melosh
Review author[s]: Keith A. Holsapple
Interactions at Sea, p. 1262
Seabirds and Other Marine Vertebrates
Joanna Burger
Review author[s]: George L. Hunt


Back Matter (39 pp.)

Previous Issue: New Series, Vol. 245, No. 4922, Sep. 8, 1989
Next Issue: New Series, Vol. 245, No. 4924, Sep. 22, 1989



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