By Esther Selsdon
By W. J. A. Mann & David Tall
By Penny Johnson, Damian Riddle, Mr Ian Roberts, Peter Ellis, Johnson, Penny, Riddle, Damian, Roberts, Ian, Ellis, Peter
By Stewart, T., Terry pratchett
By Engler, Nick (edit).
By Jeffrey, Alan
By Wright, Thomas
By Clark, Micheal
By Tart, Charles T.
By Dick Bateman, P. Lidstone
By School Mathematics Project
By G. PATRICK VENN
By Goodchild, Peter
By Wishart, Adam
By Gribbin, John
By Michael Freeman, Micharel Freeman
By Stroud, K. A.
By Blinder, Sy
By Buzan, Tony
By Hoare, Philip
By Soni, Jimmy, Goodman, Rob
By Singh, Simon, Simon Singh
By Haworth, Don
By Shields, J., Charles
By Keri Davies
By Creary, Carole, Wilson, Gay
By Deledicq, Andre