books.google.co.uk - The 16th-Century intellectual Robert Recorde is chiefly remembered for introducing the equals sign into algebra, yet the greater significance and broader scope of his work is often overlooked.Robert Recorde: Tudor Polymath, Expositor and Practitioner of Computation presents an authoritative and in-depth...http://books.google.co.uk/books/about/Robert_Recorde.html?id=dTqHIM1ds1kC&q=Robert+Recorde&utm_source=gb-gplus-shareRobert Recorde