By Foster, John
By White, G.
By Ridley, Frances
By Ian Serraillier, Peter Farmer
By Rodda, G.W.
By Potter, Tessa
By Cumming, David
By Melanie Waldron, Nicholas Lapthorn
By Waterlow, Julia
By Hart, Richard
By Borrows, Peter
By Barry Stone, etc.
By Waugh, David, Bushell, Tony, David Waugh, Tony Bushell
By Windridge, Charles, J. Kenway, Patrick, Charles Windridge
By Ramsden, Eileen
By Cowd, M.A.
By Steve Mills, Hilary Koll, Hilary Koll & Steve Mills
By Hilary Koll, Steve Mills
By Scottish Mathematics Group
By Hunt, Sheila, Buzan, Tony
By Honnor, Sylvia, Mascie-Taylor, Heather, Sylvia Honnor, Heather Mascie-Taylor
By Tregenza, Jo
By Knapp, Brian
By Liz Neporent, Suzanne Schlosberg, Shirley J. Archer
By Triggs, Tony D.