El fantasma negro

Severn Cullis-Suzuki was only twelve years old when he addressed the entire world: What are we doing to Earth, our home? How far can human greed go? Little Severn embarrassed the world leaders and asked them to be consistent, that their actions would reflect their words. An emotional speech, full of truths as simple as they are revealing, and even more relevant today than when it was delivered. This is a bilingual edition.

Biography of Elizabeth Cady Stanton, a leader in the fight for women's right to vote in the United States.

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

El ADR es un documento extenso y tedioso. Por ello resulta imprescindible entender su estructura para asi poder convertirse en una herramienta sencilla de manejar. Expedidores, ambaladores, cargadores/llenadores, transportistas, descargadores y explotadores de cisternas asi como los Consejeros de Seguridad para el transporte por carretera tiene la obligación de formar cualquier empleado que intervenga en operaciones de expedición, embalaje, carga, transporte y descarga de mercancías peligrosas por carretera.