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Documento en office

http://static.slidesharecdn.com/swf/ssplayer2.swf?doc=contaminacinauditivaaaa-101021202849-phpapp01&stripped_title=contaminacin-auditiva-5522102&userName=SiingleDiiamond



 Documento powert point

  http://static.slidesharecdn.com/swf/ssplayer2.swf?doc=colegiodebachilleres11-101021201426-phpapp02&stripped_title=colegio-de-bachilleres11-5522028&userName=SiingleDiiamond

Documento Excel

http://www.slideshare.net/SiingleDiiamond/excel-base-de-datos

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