Research News GLOBAL CHANGE Science 22 May 1992:Vol. 256, Issue 5060, pp. 1138DOI: 10.1126/science.256.5060.1138 Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears above.
Science Vol 256, Issue 506022 May 1992 Table of Contents Print Table of Contents Back Matter (PDF) Ed Board (PDF) Front Matter (PDF)