Products & Materials New Products See allHide authors and affiliations Science 08 Jul 1960:Vol. 132, Issue 3419, pp. 100-101DOI: 10.1126/science.132.3419.100 Joshua SternFind this author on Google Scholar Find this author on PubMed Search for this author on this site Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears below.
Science Vol 132, Issue 341908 July 1960 Table of Contents Print Table of Contents Back Matter (PDF) Ed Board (PDF) Front Matter (PDF)
