Knoll, Andrew2009-09-171991Knoll, Andrew H. 1991. Elso Sterrenberg Barghoorn, Jr. (June 15, 1915-January 22, 1984). Proceedings of the American Philosophical Society 135 (1):87-90.0003-049Xhttp://nrs.harvard.edu/urn-3:HUL.InstRepos:3294130en-USJournal Article