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materiales]]> Tue, 20 Oct 2015 23:35:30 GMT https://es.slideshare.net/slideshow/1-materiales-naturalesyartificiales-54193411/54193411 NidiaBarrios@slideshare.net(NidiaBarrios) 1. materiales naturales_y_artificiales NidiaBarrios materiales <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/1-151020233530-lva1-app6891-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> materiales
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materiales]]> Tue, 20 Oct 2015 23:30:53 GMT https://es.slideshare.net/slideshow/1-materiales-naturalesyartificiales/54193312 NidiaBarrios@slideshare.net(NidiaBarrios) 1. materiales naturales_y_artificiales NidiaBarrios materiales <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/1-151020233053-lva1-app6891-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> materiales
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