Siglo XXI: Misterios del espacio sideral

Readers are given helpful information about the dangers of drugs and alcohol, including narcotics, hallucinogens, and prescription medications in this informative nonfiction reader. Through detailed images, diagrams, Spanish-translated informational text, an index, a glossary of terms, and a list of websites that provide additional information, readers are given the tools and information they need to educate themselves about addiction, drug abuse, the health and social issues that drugs and alcohol can cause, and how to say no to peer pressure.

Explains the basic science of flight, the problems of getting vehicles into the air, different types of engines, and aircraft design, and includes instructions for making aircraft models.

Técnico electricista 14 – Curso visual y gráfico Protecciones eléctricas y tableros En esta clase analizaremos los principios de funcionamiento de los fusibles, las formas constructivas, y la operación de los interruptores termomagnéticos y diferenciales. Caracterizaremos los contactores, y explicaremos la construcción y clasificación de los tableros, veremos cómo se componen y los materiales utilizados para su construcción. Explicaremos los grados de protección IP relacionados con los tableros y mencionaremos los diversos accesorios que pueden utilizarse en tableros domiciliarios.

Describes How Animals Camouflage And Disguise Themselves In Order To Survive, Hunt, And Mimic Other Animals.

Chilean edition of the exhibition of Alfredo Jaar (b. Chile) in Sweden at the Fine Arts Museum of Lausanne from june to september of 2007. The present edition gathers the translations of the essays into Spanish. Contains an essay by Adriana Valdés.