Letters Progenote or Protogenote? By KARL R. POPPER, GÜNTER WÄCHTERSCHÄUSER See allHide authors and affiliations Science 23 Nov 1990:Vol. 250, Issue 4984, pp. 1070DOI: 10.1126/science.250.4984.1070 KARL R. POPPER Find this author on Google Scholar Find this author on PubMed Search for this author on this site GÜNTER WÄCHTERSCHÄUSER 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 250, Issue 498423 November 1990 Table of Contents Print Table of Contents Back Matter (PDF) Ed Board (PDF) Front Matter (PDF)