Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6, by Various 38304 [Subtitle: "Groups, Theory of" to "Gwyniad"] [Link: http://www.gutenberg.org/3/8/3/0/38304 ] [Files: 38304.txt; 38304-8.txt; 38304-h.htm] Thanks to Marius Masi, Don Kretz and the Online Distributed Proofreading Team at http://www.pgdp.net David