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Science, New Series, Vol. 236, No. 4805, May 29, 1987


Previous Issue: New Series, Vol. 236, No. 4804, May 22, 1987
Next Issue: New Series, Vol. 236, No. 4806, Jun. 5, 1987


Front Matter (18 pp.)
The Challenge to U.S. Competitiveness, p. 1041
Robert M. White


Perspective
What Myosin Might Do, pp. 1043-1044
Frank Solomon


Letters
Randomized Response Technique, p. 1049
Arthur A. Campbell
Risk Perception, p. 1049
Thomas P. Sheahen
Cancer Control, pp. 1049-1050
John C. Bailar; Eleanor Chelimsky
Foreign Engineering Students, p. 1050
Mack Gilkeson


News & Comment
Ozone Plan Splits Administration, pp. 1052-1053
Mark Crawford
Regulating Pesticides: The ``Delaney Paradox'', pp. 1054-1055
Colin Norman
PHS Revitalization Plan Stirs up NIH, pp. 1055-1056
Gina Kolata
Ariane, Shuttle Delayed Again, pp. 1056-1057
David Dickson
Bavaria Requires AIDS Testing, p. 1057
David Dickson
Prosecution Urged In Fraud Case, p. 1057
Colin Norman


Briefing
Madagascar is the Focus of Habitat Project, p. 1058
R.L.
Overhaul Recommended for British Geology, p. 1058
D.D.
Congress to Weigh Animal Patents, p. 1058
M.C.
IBM to Give Cornell a $20-Million Computer, p. 1058
C.N.
A Warning on Oil Imports, p. 1058
D.D.
Vaccine Test Okayed, p. 1058
M.C.


Research News
Leukemia Virus Linked to Nerve Disease, pp. 1059-1061
Jean L. Marx
The Earliest ``Humans'' Were More like Apes, pp. 1061-1063
Roger Lewin
An Oxygen Key to the New Superconductors, pp. 1063-1065
Arthur L. Robinson


Managing the Soils of Sub-Saharan Africa, pp. 1069-1076
Rattan Lal

Freezing, pp. 1076-1080
A. D. J. Haymet

Antisense RNA Inactivation of Myosin Heavy Chain Gene Expression in Dictyostelium discoideum, pp. 1081-1086
David A. Knecht; William F. Loomis

Disruption of the Dictyostelium Myosin Heavy Chain Gene by Homologous Recombination, pp. 1086-1091
Arturo De Lozanne; James A. Spudich


Reports
Observation of Phase Transitions in Spreading Activation Networks, pp. 1092-1094
Jeff Shrager; Tad Hogg; Bernardo A. Huberman
Single-Channel and Genetic Analyses Reveal Two Distinct A-Type Potassium Channels in Drosophila, pp. 1094-1098
Charles K. Solc; William N. Zagotta; Richard W. Aldrich
Herbivory in Rocks and the Weathering of a Desert, pp. 1098-1099
Moshe Shachak; Clive G. Jones; Yigal Granot
Gene for Von Recklinghausen Neurofibromatosis is in the Pericentromeric Region of Chromosome 17, pp. 1100-1102
D. Barker; E. Wright; K. Nguyen; L. Cannon; P. Fain; D. Goldgar; D. T. Bishop; J. Carey; B. Baty; J. Kivlin; H. Willard; J. S. Waye; G. Greig; L. Leinwand; Y. Nakamura; P. O'Connell; M. Leppert; J.-M. Lalouel; R. White; M. Skolnick
HTLV-I--Associated B-Cell CLL: Indirect Role for Retrovirus in Leukemogenesis, pp. 1103-1106
Dean L. Mann; Patricia DeSantis; George Mark; Andrea Pfeifer; Mark Newman; Nigel Gibbs; Mikulas Popovic; M. G. Sarngadharan; Robert C. Gallo; Jeffrey Clark; William Blattner
Human Amnion Membrane Serves as a Substratum for Growing Axons in vitro and in vivo, pp. 1106-1109
George E. Davis; Scott N. Blaker; Eva Engvall; Silvio Varon; Marston Manthorpe; Fred H. Gage
Human Cerebral Hemispheres Develop at Different Rates and Ages, pp. 1110-1113
R. W. Thatcher; R. A. Walker; S. Giudice
Aedes albopictus in North America: Probable Introduction in Used Tires from Northern Asia, pp. 1114-1116
William A. Hawley; Paul Reiter; Robert S. Copeland; Charles B. Pumpuni; George B. Craig
Expression and Properties of Two Types of Protein Kinase C: Alternative Splicing from a Single Gene, pp. 1116-1120
Yoshitaka Ono; Ushio Kikkawa; Kouji Ogita; Tomoko Fujii; Tsutomu Kurokawa; Yoshinori Asaoka; Kazuo Sekiguchi; Katsuhiko Ase; Koichi Igarashi; Yasutomi Nishizuka
Expression of the Multidrug-Resistant Gene in Hepatocarcinogenesis and Regenerating Rat Liver, pp. 1120-1122
S. S. Thorgeirsson; B. E. Huber; S. Sorrell; A. Fojo; I. Pastan; M. M. Gottesman
In vivo Uncoating and Efficient Expression of Foreign mRNAs Packaged in TMV-Like Particles, pp. 1122-1124
Daniel R. Gallie; David E. Sleat; John W. Watts; Philip C. Turner; T. Michael A. Wilson


Book Reviews
Hominid Evolution: A Search for Models, p. 1125
The Evolution of Human Behavior
Warren G. Kinzey
Review author[s]: Robert S. O. Harding
Phosphorite Sedimentation, pp. 1125-1126
Phosphate Deposits of the World
P. J. Cook; J. H. Shergold
Review author[s]: Preston Cloud
Icy Estuaries, p. 1126
Fjords
James P. M. Syvitski; David C. Burrell; Jens M. Skei
Review author[s]: Bruce F. Molnia
Wind Processes, pp. 1126-1127
Aeolian Geomorphology
William G. Nickling
Review author[s]: Nicholas Lancaster


Back Matter (17 pp.)


Software Reviews
The ASYST Software for Scientific Computing, pp. 1128-1132
Review author[s]: David Hary; Koichi Oshio; Steven D. Flanagan

Previous Issue: New Series, Vol. 236, No. 4804, May 22, 1987
Next Issue: New Series, Vol. 236, No. 4806, Jun. 5, 1987



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