Tipos de comunicación

vídeos referidos al tema

http://www.youtube.com/watch?v=OT-T1-RIlHI

http://www.youtube.com/watch?v=j8xu1p0DtPc&feature=related

http://www.youtube.com/watch?v=vY_ijggQssE&feature=related

http://www.youtube.com/watch?v=KsNcrSDSyig&feature=related

´http://www.youtube.com/watch?v=vGThUpi898w&feature=related