571:"The worlds smallest Christmas card which has been created by British scientists and it is 200 million times smaller than a postage stamp. See National News story NNCARD: The tiny card, which is 15 microns by 20 microns, even includes an intricate inscription of a snowman and seasonal messages - despite being too small to see with the naked eye. It was created by scientists at the National Physical Laboratory in Teddington, south west London, who say it is ten times smaller than the previous record holder. A micron is the equivalent to one millionth of a metre. 28:"National Physical Laboratory
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