By School Mathematics Project
By John
By Henry McKeating
By Nichols, Roger
By J. R. Tanner
By Fletcher, T J
By Alan Hunter, Hunter, Alan
By Felix
By Association of Teachers of Mathematics
By Ackroyd, Peter R.
By Adrian A. Roscoe
By David Luban
By Theresa Clementson, Leanne Gray, Howard Smith
By Richard Harwood, Ian Lodge, Harwood, Richard, Lodge, Ian
By Bryden
By Boyd, Anne
By F. W. Rawding