Articles How Much Are Nature's Services Worth? By Walter E. Westman See allHide authors and affiliations Science 02 Sep 1977:Vol. 197, Issue 4307, pp. 960-964DOI: 10.1126/science.197.4307.960 Walter E. Westman 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 197, Issue 430702 September 1977 Table of Contents Print Table of Contents Back Matter (PDF) Ed Board (PDF) Front Matter (PDF)