Articles Advances in Computer-based Education By D. Alpert, D. L. Bitzer See allHide authors and affiliations Science 20 Mar 1970:Vol. 167, Issue 3925, pp. 1582-1590DOI: 10.1126/science.167.3925.1582 D. Alpert Find this author on Google Scholar Find this author on PubMed Search for this author on this site D. L. Bitzer 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.