Follas de Cálculo de Excel

https://drive.google.com/file/d/0B9BF5LaTQmOpX2pfOVUyWDBKLUE/view?usp=sharing Parte 1 https://drive.google.com/file/d/0B9BF5LaTQmOpOWd5WGotX2s0WGc/view?usp=sharing Parte 2 https://drive.google.com/file/d/0B9BF5LaTQmOpOEhTZUlXcGFGMDA/view?usp=sharing Parte 3 https://drive.google.com/file/d/0B9BF5LaTQmOpdWo1NTEtM0xsTEE/view?usp=sharing Parte 4