By Wright, David
By Bamford, C and Grant, C., Grant, S.J.
By Boyce, Byrne
By J Atwood, B Miller
By Nuttall, Chris J.
By Dyer, David
By Baer, Edith
By School Mathematics Project
By Stimpson, Peter, Dorton, Ian, Dyer, David, Grainger, David
By Collett, Diane, Spencer, Michael
By Bricker, Simon
By Dyer, David, Dorton, Ian, Grainger, David, Stimpson, Peter
By Chambers Editors
By BBC
By Huggett, Renee
By Davies, Gwyn, Hicks, Gordon
By Kemp, Katherine, Pearson, Stephen
By Evans, Desmond W.
By Phillip Hatton
By Byrom, Jamie, Counsell, Christine, Riley, Michael, Gorman, Mike, Wrenn, Andrew
By Byrom, Jamie, Counsell, Christine, Riley, Michael, Peaple, Derek, Gorman, Mike
By Graham Darby
By Brindley, B., Squires, S., Boyce, J, Smith, J
By Brooman, Josh
By Jewel, B., etc.
By Chambers, Ian, Squires, Susan
By Buckley, Martin, Brindley, Barry, Greenwood, Malcolm
By Cootes, Richard, Snellgrove, L
By L. E. Snellgrove