By Straker, Anita
By Barlow, Adrian
By Wilsher, Barry, Wilsher, Jill
By Bolt, Brian
By Price, Susan
By School Mathematics Project
By Brown, Richard, Ruttle, Kate
By Ruttle, Kate, Brown, Richard, Hayward, Niki
By Hooper, Meredith
By Mitton, Tony, Parkins, David
By Gibson, Rex
By Crebbin, June
By Gardiner, Tony
By Copeland, Tim
By Cottia Howard, Penny Liddiard, Howard, Cottia, Liddiard, Penny
By Brace, Steve
By Usher, Frances
By Rose, Gerald
By Jack C. Richards, Samuela Eckstut-Didier
By Jack C. Richards, Samuela Eckstut
By Lynn Bonesteel
By Styles, Morag
By Quadling, Douglas