Harriet Tubman

Este texto de Química, dirigido a los alumnos de segundo curso de Bachillerato fue diseñado y proyectado para conseguir unos objetivos: pretende, partiendo de unos contenidos mínimos, conducir al alumno hasta aquellos que, por ser necesarios para afrontar una enseñanza superior, le serán exigidos por la Universidad o una Escuela Técnica. También incluye una serie de problemas con sus soluciones.

Sally, una dulce y simpática muela adolescente, recibe la visita de la terrorífica Caries. Por lo que deberá adentrarse en un viaje lleno de aventuras junto a sus adorables amigos para buscar la ayuda del Chamán del Norte.

As a successful former slave, Clara Brown used her money to help other freed slaves get a new start in life. In 1859 Clara bought her own freedom and headed west to Colorado to find her daughter, who was sold when she was just a little girl. Clara didn't find her daughter there, but she did get rich. The people she helped became her family, and she became known as "Aunt" Clara Brown.

Presents information about super jumbo jets, looking at the history and development of jets, discussing various aspects of design and construction, and exploring different types of jets, including the Concorde and the Airbus A380.