Libros de David Armentrout (4 libros)

Defines pulleys, explains their functions, and suggests simple experiments to demonstrate how they work.

Provides The History Of Biofuels, Different Uses, Positive And Negative Characteristics, And How They Will Impact The Future.

Explains The Early History Of How The Bill Of Rights Came To Be And How It Is Used To Protect Citizens.

Follows the life and career of the French scientist who proved the existence of germs and their connection with diseases.