Author initiated, completed page range, added more keywords, verified, author (Heath) requested file to be uploaded (he owns copyright together with Prof. Armstrong) permission in LibShare, 13.11.13-MMM 
Publication changed to 'not mine' in Elements, however to remain in Repository as was written by Heath and Prof Armstrong.  Lyn 8/7/16. Supporting documentation added to dark upload - HD 13/11/17. Added year, LL 21/1/25