Letters Intramural Research See allHide authors and affiliations Science 28 Oct 1960:Vol. 132, Issue 3435, pp. 1262DOI: 10.1126/science.132.3435.1262-a David E. GoldmanFind 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 343528 October 1960 Table of Contents Print Table of Contents Back Matter (PDF) Ed Board (PDF) Front Matter (PDF)
