Association Affairs Association Affairs See allHide authors and affiliations Science 25 Nov 1949:Vol. 110, Issue 2865, pp. 571-573DOI: 10.1126/science.110.2865.571 Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears below.
Science Vol 110, Issue 286525 November 1949 Table of Contents Print Table of Contents Back Matter (PDF) Ed Board (PDF) Front Matter (PDF)
