News & Comment NEWS IN BRIEF Science 21 Jun 1968:Vol. 160, Issue 3834, pp. 1321DOI: 10.1126/science.160.3834.1321 Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears above.
Science Vol 160, Issue 383421 June 1968 Table of Contents Back Matter (PDF) Ed Board (PDF) Front Matter (PDF)