By Kerslake, Daphne, etc.
By SPMG
By Straker, Anita
By Paula Martyr
By Speed, B.
By Collins A-level
By CGP Books, CGP Books
By Sherran, Peter, Crawshaw, Janet
By Michael White, White, Michael
By Collins GCSE
By Parsons, Richard
By Sherran, Peter
By Clarke, Peter
By Domoney, Bill, Harrison, Paul
By Scottish Primary Mathematics Group
By Scottish Primary Maths Group SPMG, SPMG, Scottish Primary Maths Group
By Griffiths, Rose, Millard, Peter
By Fidge, Louis, SPMG, Scottish Primary Maths Group, Suggate, Jennifer, Davis, Andrew, Goulding, Maria