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<div class="yiv2379290262MsoNormal" id="yui_3_16_0_1_1430066448842_12820"><span style="font-size:16.0pt;" id="yui_3_16_0_1_1430066448842_12819">É preciso ter o Mathematica Player (FREE):</span><u></u><u></u></div>
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<div class="yiv2379290262MsoNormal"><span lang="EN-US" style="font-size:14.0pt;">Huygens's Principle</span><u></u><u></u></div>
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