By Koll, Hilary, Mills, Steve
By CGP Books, CGP Books
By Vorderman, Carol, Carol Vorderman
By Mark Patmore, Patmore, Mark
By CGP Books
By Murray, Les
By Jeanette Mumford, Clarke, Peter
By LAITHWAITE, E. R.
By Paul Metcalf, Metcalf, Paul, Courcy, Jayne de
By School Mathematics Project
By Staneff, Tony
By Anon, Ladybird
By Bostock, L, Chandler, F S, Shepherd, A, Smith, Ewart
By Igloo Books Ltd
By School
By Ruth Merttens, David Kirkby
By Cairns, James, Geddes, Strang, Thomas
By Roberts, Hannah
By K. M. Vickers, etc., M. J. Tipler, Vickers, K. M., Tipler, M. J.