By Farrall, Cate, Lindsley, Marianne
By Drazin, PGDrazin
By Denys Hay
By Swallow, Tom
By Neill, Hugh, Quadling, Douglas
By Potter, G. R.
By World Trade Organization
By Dabbah, Maher M., Ning, Ding
By Taylor, Gillian
By Wiles, David
By School Mathematics Project
By Anthony, Martin
By Brown, Robert A.
By Innes, C. L.
By Decker/Winkle
By Lindley, David
By Thompson, Ann
By Dodds, John H.
By N/A
By Rosenberg, Marjorie
By AQA
By Coughlan, Guy D., Dodd, James E.
By Fitzwilliam Museum
By Atkinson, Sue, Harrison, Sharon, Rousham, Laurie
By Simon Trussler
By Lindstromberg, Seth
By Hardie, Philip
By Plato, G.R.F. Ferrari, Tom Griffith
By Sciama, D. W.