News & Comment SCIENTIFIC NOTES AND NEWS See allHide authors and affiliations Science 17 Mar 1933:Vol. 77, Issue 1994, pp. 278-281DOI: 10.1126/science.77.1994.278-a Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears below.
Science Vol 77, Issue 199417 March 1933 Table of Contents Print Table of Contents Back Matter (PDF) Front Matter (PDF)
