News News of Science Science 30 Nov 1956:Vol. 124, Issue 3231, pp. 1071-1075DOI: 10.1126/science.124.3231.1071 Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears above.
Science Vol 124, Issue 323130 November 1956 Table of Contents Print Table of Contents Back Matter (PDF) Ed Board (PDF) Front Matter (PDF)