By Gardner, Martin
By Hoyle, Fred
By Zegarelli, Mark
By Rich, Barnett
By Maor, Eli
By D. Rayner, Rayner, D.
By School Mathematics Project
By Mills, Steve, Koll, Hilary
By Ohanian, Hans C
By Derbyshire, John
By Allan, Ray, Williams, Martin T.
By Poskitt, Kjartan, Davis, Rob
By Cochrane, Richard
By Fielding, David
By Sternberg Ph.D., Karin, Sternberg, Robert J., Body, Andrew H.
By N/A
By Brian Jefferson, Jefferson, Brian
By Goldsmith, Dr Mike
By Neill, Hugh, Quadling, Douglas
By Swift, Louise
By Hopkins, Liz
By Cowie, Leonard
By Howard Thomas, Thomas, H
By H. Thomas, Thomas, H