Letters Small Business R & D + See all authors and affiliations Science 29 Jan 1982:Vol. 215, Issue 4532, pp. 456DOI: 10.1126/science.215.4532.456 JOHN J. LAFALCEFind this author on Google Scholar Find this author on PubMed Search for this author on this site Article Info & Metrics eLetters PDF This article has a correction. Please see:Erratum - February 19, 1982 This is a PDF-only article. The first page of the PDF of this article appears below.