Technical Comments Evolutionary Effects of Cosmic Radiation By G. G. Simpson See allHide authors and affiliations Science 04 Oct 1968:Vol. 162, Issue 3849, pp. 140-141DOI: 10.1126/science.162.3849.140 G. G. Simpson Find 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 above.
Science Vol 162, Issue 384904 October 1968 Table of Contents Back Matter (PDF) Ed Board (PDF) Front Matter (PDF)