Technology and Inventions

"Tecnología e inventos. Actualizado en el 2012 y como parte de Britannica Learning Library Series, en este volumen, aprenderemos sobre los grandes inventores e invenciones que han cambiado nuestras vidas. Updated for 2012 and part of the Britannica Learning Library Series, in Technology and Inventions, you will learn about the great inventors and inventions that have changed our lives."