By Pointer, Lynne, Abbey, Sally
By Griffiths, Rose, Raper, Barbara
By Merttens, Ruth, Kirkby, Dave
By Barclay, Robert
By SSMG
By John Boath, Robin Christie, Craig Lowther et el.
By Morgan, Rowland
By Patilla, Peter
By Maxwell, Sadie
By Petherham, Louise
By CGP Books, CGP Books
By Brian Jefferson, Jefferson, Brian
By School Mathematics Project
By Graham Newman, Newman, Graham
By David Martin, Terry Heard, Roger Porkess, Martin, David, Heard, Terry, Porkess, Roger
By CGP Books
By Hanson, David
By White, Michael
By Byrd, Greg
By Graham, Ted, Berry, John, Williamson, Roger, Courcy, Jayne de
By G.R. McDuell, McDuell, G.R.
By Straker, Anita
By Sawyer, Ann