Letters A Private Experiment See allHide authors and affiliations Science 26 Jan 1973:Vol. 179, Issue 4071, pp. 329DOI: 10.1126/science.179.4071.329-a John WorrallFind 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 179, Issue 407126 January 1973 Table of Contents Print Table of Contents Back Matter (PDF) Ed Board (PDF) Front Matter (PDF)
