By Harwit, Martin, Sloane, N. J. A.
By Magnasco, Valerio
By Ogborn
By Mitchell, Sandra, Sherry, Mr Chris, McDuell, Mr Bob
By Best, Clare
By Helmberg, Gilbert
By Riley, Peter
By Ann Fullick
By Chris Oxlade
By Challoner, Jack, Jack Challoner
By Crundell, Mike
By Milo, Ron, Phillips, Rob
By White, Michael, Gribbin, John
By CGP Books, CGP Books
By Shao, Jing
By Smith, Eric Brian
By Dasent, W.E.
By Denaro, A.R.
By Advanced Physics Project for Independent Learning
By Geddes, S.M.
By Ogborn, Jon, Marshall, Rick, Lawrence, Ian
By Steve Parker
By Solway, Andrew
By Akrill, T.B., Osmond, S.J.
By Nelkon, Michael, Detheridge, M.V., M Nelkon
By Nuffield-Chelsea Curriculum Trust
By Akrill, T.B., Millar, C.J.