By School Mathematics Project
By Hardy, Tansy, etc., Haworth, Anne
By John Jeskins, Howard Baxter, Jean Matthews, Michael Handbury, Mark Patmore, Jeskins, John, Baxter, Howard, Matthews, Jean, Handbury, Michael, Patmore, Mark
By Gordon, Keith
By Hogan, Paul, Job, Barbara, Morley, Diane, Newman, Graham
By Ledger, P., P, P. Ledger, et al
By Keith Sharp, Ian Graham Wilson, Sharp, Keith, Wilson, Ian Graham
By LETTS EDUCATIONAL
By Carol Vorderman, Vorderman, Carol
By Nicholson, Su
By Ann Montague-Smith
By Carroll, Bradley W., Ostlie, Dale A.
By Borrelli, Robert L., Coleman, Courtney S.
By Maltby, John, Day, Liz, Williams, Glenn
By Sherran, Peter
By Ritchie, Rob
By Michael Cornelius
By Graham Galtrey
By John L Cable
By Pearce, Chris
By Riddington, Mark, Grier, Martin