PRELIMINAR PRACTICA NO1
pdf:
https://docs.google.com/viewer?a=v&pid=explorer&chrome=true&srcid=0B2J5nKEVZ9HYMjU0MDRkOWMtZjI4OS00ZDM4LWI4YTAtMTliMjEyN2JhYTJh&hl=en_US
word:
https://docs.google.com/viewer?a=v&pid=explorer&chrome=true&srcid=0B2J5nKEVZ9HYOWY1NjM0YmYtNGMwNS00ODk3LTliM2YtZjZjNzMwOWQ1MDQ1&hl=en_US