By New Horizons Science
By School Mathematics Project
By Douglas Quadling, Hugh Neill
By Milner, Bryan, Martin, Jean, Evans, Peter
By Gary Cambers, Steve Sibley, Cambers, Gary, Sibley, Steve
By Rey M H.a.
By Tom Jackson
By Helen Cowcher, Cowcher, Helen
By Jacqueline Wilson, Wilson, Jacqueline, Sharratt, Nick
By Katy Cropper, Barbara Collins
By Stephen Pollock, Pollock, Stephen, Ratcliffe, Sheila, Potter, Tony
By Horton, Penny
By Ann Gregory, Jane Vellacott, Mary Whitehouse
By Richard Butler, Natural History Museum
By Cecily Gayford
By Herbie Brennan
By Russell Stannard, Stannard, Prof Exors of Russell
By Ricky Gervais, Rob Steen
By Swapna Haddow
By Clare, John, Farley, Paul
By Elizabeth Winthrop, Winthrop, Elizabeth, Joyce, W.
By Tony Lawler, Lawler, Tony
By Robert Jackson
By John L. Lewis, G.E. Foxcroft, Lewis, John L., Foxcroft, G.E.
By Terry Cash
By Sheila Tarpey, Tarpey, Sheila
By Michaela Morgan, Colin Milkins, Roberta Neate, Sue Palmer, Morgan, Michaela, Milkins, Colin, Neate, Roberta, Palmer, Sue