News & Comment News and Notes Science 07 Aug 1953:Vol. 118, Issue 3058, pp. 152-156DOI: 10.1126/science.118.3058.152 Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears above.
Science Vol 118, Issue 305807 August 1953 Table of Contents Print Table of Contents Back Matter (PDF) Ed Board (PDF) Front Matter (PDF)