Articles Cause and Effect in Biology By Ernst Mayr See allHide authors and affiliations Science 10 Nov 1961:Vol. 134, Issue 3489, pp. 1501-1506DOI: 10.1126/science.134.3489.1501 Ernst Mayr 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 134, Issue 348910 November 1961 Table of Contents Print Table of Contents Ed Board (PDF) Front Matter (PDF)