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Science, New Series, Vol. 236, No. 4807, Jun. 12, 1987


Previous Issue: New Series, Vol. 236, No. 4806, Jun. 5, 1987
Next Issue: New Series, Vol. 236, No. 4808, Jun. 19, 1987


Front Matter (15 pp.)
Municipal Waste, p. 1409
Philip H. Abelson


Letters
APS Report on SDI, pp. 1411-1412
Louis C. Marquet; Joel Selbin
Bipedal Locomotion, p. 1412
Jon Marks
Immigrant Entrepreneurs, p. 1412
Peter Bearse


Erratum: Tanker 'Dumping' regulations (1 p.)


News & Comment
Fredrickson's Bitter End at Hughes, pp. 1417-1418
Barbara J. Culliton
A Quest for Ancient Egyptian Air, pp. 1419-1420
Constance Holden
Drug Trial for Parkinson's, p. 1420
Roger Lewin
Armageddon Revisited, pp. 1421-1422
Eliot Marshall
IOM Elects New Members, p. 1422


Briefing
States Want More Time to Prepare SSC Bids, p. 1422
M.C.


Research News
AIDS: Statistics but Few Answers, pp. 1423-1425
Deborah M. Barnes
Geophysics Smorgasbord was Spread in Baltimore, pp. 1425-1427
Richard A. Kerr
Soviet Space Science Opens to the West, pp. 1427-1431
M. Mitchell Waldrop
High-Temperature Superconductor Hints, p. 1431
Arthur L. Robinson


The Constitution of Economic Policy, pp. 1433-1436
James M. Buchanan

Asymmetry of Lineages and the Direction of Evolutionary Time, pp. 1437-1441
Stephen Jay Gould; Norman L. Gilinsky; Rebecca Z. German

Tsunamis Generated by Eruptions from Mount St. Augustine Volcano, Alaska, pp. 1442-1447
Jürgen Kienle; Zygmunt Kowalik; T. S. Murty

A Physical Map of the Escherichia coli K12 Genome, pp. 1448-1453
Cassandra L. Smith; Jason G. Econome; Andrew Schutt; Stephanie Klco; Charles R. Cantor


Reports
Fluorescence Properties of Calmodulin-Binding Peptides Reflect Alpha-Helical Periodicity, pp. 1454-1456
Karyn T. O'Neil; Henry R. Wolfe; Susan Erickson-Viitanen; William F. DeGrado
Corkscrew-Like Shortening in Single Smooth Muscle Cells, pp. 1457-1459
David M. Warshaw; Whitney J. McBride; Steven S. Work
Computer Simulations of the Diffusion of a Substrate to an Active Site of an Enzyme, pp. 1460-1463
K. Sharp; R. Fine; B. Honig
A New Method for Analyzing Powder Diffraction Patterns: Confirmation of a Predicted Phase of SF 6, pp. 1463-1465
Lawrence S. Bartell; Jacques C. Caillat; Brian M. Powell
Frequency Dependence of Electric Field Modulation of Fibroblast Protein Synthesis, pp. 1465-1469
Kenneth J. McLeod; Raphael C. Lee; H. Paul Ehrlich
Pollen and Spores Date Origin of Rift Basins from Texas to Nova Scotia as Early Late Triassic, pp. 1469-1472
Alfred Traverse
Swept Away: Resuspension of Bacterial Mats Regulates Benthic-Pelagic Exchange of Sulfur, pp. 1472-1474
Jonathan Grant; Ulrich V. Bathmann


Book Reviews
Themes in Embryology, p. 1475
A History of Embryology
T. J. Horder; J. A. Witkowski; C. C. Wylie
Review author[s]: Keith R. Benson
Human Genetic Diversity, pp. 1475-1476
Genetic Variation and Its Maintenance
D. F. Roberts; G. F. De Stefano
Review author[s]: James F. Crow
The Calcichordate Theory, p. 1476
The Ancestry of the Vertebrates
R. P. S. Jefferies
Review author[s]: James Sprinkle
American Chemistry, pp. 1476-1477
Essays on the History of Organic Chemistry in the United States, 1875-1955
Dean Stanley Tarbell; Ann Tracy Tarbell
Review author[s]: Leon Gortler


Back Matter (16 pp.)

Previous Issue: New Series, Vol. 236, No. 4806, Jun. 5, 1987
Next Issue: New Series, Vol. 236, No. 4808, Jun. 19, 1987



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