Meetings & Meeting Reports Meetings & Conferences See allHide authors and affiliations Science 29 Jun 1951:Vol. 113, Issue 2948, pp. 10DOI: 10.1126/science.113.2948.10 Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears below.
Science Vol 113, Issue 294829 June 1951 Table of Contents Print Table of Contents Back Matter (PDF) Ed Board (PDF) Front Matter (PDF)
