News & Comment Announcements Science 29 Oct 1965:Vol. 150, Issue 3696, pp. 594DOI: 10.1126/science.150.3696.594 Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears above.
Science Vol 150, Issue 369629 October 1965 Table of Contents Print Table of Contents Back Matter (PDF) Ed Board (PDF) Front Matter (PDF)
