By Carter, James, Holmes, Stuart, Hunt, Roderick, Brychta, Alex
By Shipton, Paul, Schon, Nick, Hunt, Roderick, Brychta, Alex
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By Fitzgerald, Bernadette, etc., Hiatt, Karina, Hilyer, Joyce
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By Reader's Digest
By St. Martin's Press, LLC
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By Macfarlane, Tom
By West Sussex Science 5-14 Scheme
By Wragg, Professor E. C.
By Over, Gladys
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By Barraclough, Sue