Letters Oil Import Fee? + See all authors and affiliations Science 30 Jan 1987:Vol. 235, Issue 4788, pp. 522b-522DOI: 10.1126/science.235.4788.522b DAVID B. GOLDSTEINFind 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 below.