By School Mathematics Project
By Booth, Vernon
By Swarbrick, Ann, Mary
By Berry, Mary
By Shakespeare, WILLIAM, Dover Wilson, John
By K. L. Johnson
By H. P. Greenspan
By Norris, Helen
By Jollands, David
By John Dover Wilson
By British Museum
By Cambridge University Press
By Stark, Andrew
By Thompson, Denys
By Naylor, Helen, Hagger, Stuart
By Jakeman, Vanessa, McDowell, Clare
By Cambridge ESOL
By Spratt, Mary, Pulverness, Alan, Williams, Melanie
By Graham-Cameron, Mike
By Brook-Hart, Guy
By Denys Hay
By Austin, C. R., Short, R. V.
By Capel, Annette, Sharp, Wendy
By Alex, Tilbury, Clementson, Theresa, Hendra, Leslie Anne, Rea, David, Doff, Adrian
By Austin, Colin Russell, Short, R. V.
By Horner, David
By Ellenby, Jean