News & Comment NEWS and Notes Science 17 Feb 1950:Vol. 111, Issue 2877, pp. 187-190DOI: 10.1126/science.111.2877.187 Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears above.
Science Vol 111, Issue 287717 February 1950 Table of Contents Print Table of Contents Back Matter (PDF) Ed Board (PDF) Front Matter (PDF)