Fisher, Ronald Aylmer, Sir, 1890-19622006-11-172006-11-171939Science, 90: 436 (1939) (Originally printed in the Times (London), 29 Sept., 1939)http://hdl.handle.net/2440/15130Reproduced with permission of the American Association for the Advancement of Science.11049 bytesapplication/pdfenJournal article