Articles Elmer Martin Nelson, Government Scientist See allHide authors and affiliations Science 15 May 1959:Vol. 129, Issue 3359, pp. 1344-1345DOI: 10.1126/science.129.3359.1344 CHESTER D. TOLLEFind 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 129, Issue 335915 May 1959 Table of Contents Back Matter (PDF) Ed Board (PDF) Front Matter (PDF)