Firma digital en nuestros documentos
Posted on: 10 diciembre 2012
En el siguiente enlace http://www.educacontic.es/blog/como-crear-una-firma-digital-para-tus-documentos-online l@s chic@s de Educacontic nos explican como crear una firma digital on line para nuestros documentos
Escuela TIC 2.0 
11 julio 2013 a 11:33
I do not even know how I ended up here, but I thought this
post was great. I don’t know who you are but definitely you are going to a famous blogger if you are not already 😉 Cheers!