Enlaces:[1] http://www.edu.xunta.gal/centros/iescurtis/taxonomy/term/33 [2] http://www.slideshare.net/carmen.manteiga/diles-que-no-me-maten-1158667?type=powerpoint [3] http://www.slideshare.net/ [4] http://www.slideshare.net/carmen.manteiga