La Primera Biblioteca del Bebé Animales (Baby's First Library-Animals Spanish)

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.

Readers are introduced to some of the most well-known criminals and tyrants of the past in this exciting nonfiction reader. Featuring intriguing facts and theories, colorful images, and informational text in conjunction with a glossary of terms, a bibliography, and a list of helpful websites with more information, this text will make readers want to learn all they can about ancient history and the bad guys and gals from the past. This book has been translated into Spanish.

This Title Introduces Students To The Basic Concept Of Sounds. How Sounds Can Be Heard But Not Seen. How Sound Is A Form Of Energy That Is Transmitted Through Sound Waves Which Travel Through Your Eardrum To Be Heard. How Sound Travels Through Air And At

Introducción, traducción y notas de A. Melero Bellido. Revisada por A. A. González Terriza y R. Herrera Montero.