Carlos Andrés Pinilla Rodríguez - Ingeniero Químico. Profesor de química, física y matemáticas


Necesita Flash Player para poder verlo.
A Day Without Chemistry
Imagine a day without cars, electric lights, TV, telephones, safe food, and water, medicine, clothing, your house, and thousands of other familiar objects that make up modern society. Do it, and you a...
Editor de páginas web alojado en Vistaprint