By School Mathematics Project
By University of Cambridge Local Examinations Syndicate
By Jones, Geoff, Jones, Mary, Marchington, Phillip
By Snape, George, Hall, Marguerite, Heslop, Nigel, Williams, James, Brodie, David
By Milner, Bryan
By Glover, David
By Tsokos, K. A.
By Sang, David, Chadha, Gurinder
By Chadha, Gurinder, Sang, David
By Sang, David, Gibbs, Keith, Hutchings, Robert, David Sang, Keith Gibbs, Robert Hutchings
By McCormick, Andrew, Elliott, Alexander
By Sang, David, David Sang
By Kennedy, Stuart
By Taylor, Janet
By Ellen, Barbara, Deary, Terry
By Deary, Terry
By Williams, Martin H.
By Maunder, Colin
By Monger, Grace, etc.
By Nuffield Physics
By Palfreyman, Keith
By Snape, George, Rowlands, David