Association Affairs Revolution in Electrical Technology (1870-1900) By Otto Mayr See allHide authors and affiliations Science 18 Dec 1970:Vol. 170, Issue 3964, pp. 1339-1340DOI: 10.1126/science.170.3964.1339 Otto Mayr 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.