News & Comment News and Notes Science 16 Jan 1953:Vol. 117, Issue 3029, pp. 51-56DOI: 10.1126/science.117.3029.51 Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears above.
Science Vol 117, Issue 302916 January 1953 Table of Contents Print Table of Contents Back Matter (PDF) Ed Board (PDF) Front Matter (PDF)