By Hughes, Martin
By School Mathematics Project
By Briten, Paul
By Woodman, Anne, etc., Albany, E., Riding, Richard
By Pate, Katherine, Norman, Naomi
By Griffiths, Rose, Millard, Peter
By No author listed
By Pearson
By JOHNS, Bobbie
By Serena Alexander
By Jeffrey, Andrew
By CGP Books
By David Clemson
By Taylor, Kim
By Hilary Koll
By Andrew Brodie
By J.W. Adams, R.P. Beaumont