By School Mathematics Project
By Breithaupt, J, Ryan, Lawrie, J Breithaupt
By David Waugh, Tony Bushell
By McDuell, G.R., etc.
By Harris, Nathaniel
By Simson, David
By Bowden, Rob, Maconachie, Roy
By Bowden, Rob
By Riley, Peter
By Ross, Stewart
By Goodman, Polly
By Sheehan, Sean
By Haughton, Emma, Posen, Michael
By Davidson, Anna
By Levy, Patricia
By Woodward, Kay