By Wendy Clemson, David Clemson
By Capewell, Dave
By Smith, Ken, McGuire, Peter
By Kearsley Bullen, Rob, Edmondson, Andrew, Ward, Tony
By School Mathematics Project
By Coad, Mal, Whiffen, Glenn, Maenpaa, Marjut, Humphries, Mark, Foley, James, Haese, Michael
By Tipler, Maryanne, Douglas, Jocelyn
By Webber, Beryl, Haigh, Jean
By TickTock Books
By Hanson, David E
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By Tipler, M J
By Cotton, Tony
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By King, Andrew
By Buchan, R. B., etc.
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By Allan, Ray
By Capewell, Dave, Mullarkey, Pete, Nicholson, James, Plass, Clare, Dave Capewell, Pete Mullarkey, James Nicholson, Clare Plass
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