ArticlesPerspectives on Needs and Supplies of Resources Perspectives on Needs and Supplies of Resources By Earl Cook See allHide authors and affiliations Science 20 Feb 1976:Vol. 191, Issue 4228, pp. 676-682DOI: 10.1126/science.191.4228.676 Earl Cook 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.