By Anita Ganeri
By bell / traynor / aucott, Clive Bell, Tracy Traynor
By Hunt, J.A.
By Beashel, Paul, Taylor, John, Beashel, Paul
By Claxton, Charles, Miller, Tracy, Reed, Leanda
By Calvert, Mike
By Zheng Quing
By Jen Green
By Wiegand, Patrick, Patrick Wiegand
By Hall, Derek
By Gillard, Keith
By Teichmann, Iris
By Simon Milligan, Martin Curtis
By Bindley, M., Oliver, C., Ledsham, A., Elvin, R.
By Tony Banks, etc., Banks, Tony, Fraser, Alan, Alcorn, David
By Kranat, Jayne, Nicholson, James, Houseden, Brian, Jayne Kranat, James Nicholson, Brian Houseden
By Greer, Alex
By Clarke, Peter, Rossiter, Christina
By Steve Parker
By Project, School Mathematics
By School Mathematics Project
By Ross, Mandy
By Smucker, Barbara
By Nicola Barber
By John Dobson Paul Levy Nick Parmer
By Collinson, J. ; Dobson J. ; Granycome, J.
By Dobson, K., etc.