This Week in Science THIS WEEK IN SCIENCE Science 05 Feb 1993:Vol. 259, Issue 5096, pp. 741DOI: 10.1126/science.259.5096.741 Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears above.
Science Vol 259, Issue 509605 February 1993 Table of Contents Print Table of Contents Back Matter (PDF) Ed Board (PDF) Front Matter (PDF)