El maravilloso ciclo del agua

When President Thomas Jefferson bought the Louisiana Territory from cash-strapped France in 1803, he doubled the size of the United States without really knowing what he was getting. He dispatched Meriwether Lewis and William Clark and their Corps of Discovery to explore a territory that would include part or all of fifteen future states and to seek a water route to the West Coast. Westward expansion began immediately, all for the bargain price of 15 million dollars. This book richly explores this fascinating part of history.

Dragonflies are large flying insects known for their brightly colored bodies and see-through wings. They are among the fastest insects in the world. Learn more about these amazing animals in Dragonflies, a Fascinating Insects book.

Among the multitude of dictionaries available on the market, this one stands out for being especially designed for students and learners of English. This dictionary is the ideal learning tool for students at the intermediate level who wish to expand upon their knowledge of the English language. To this end, this volume offers over 40,000 terms taken from everyday language, each with its phonetic transcription to make pronunciation easier. It also features examples of grammatical usage, numerous informative charts (with both grammatical and cultural information), helpful illustrations, and...

"Viaja por el cuerpo humano, de la cabeza a los pies, y descubre las maravillas que alberga nuestro interior. l cuerpo humano es una guía completa ilustrada de los distintos sistemas del cuerpo y de su funcionamiento. Cientos de diagramas detallados a todo color te ofrecen explicaciones visuales de todas las partes del cuerpo. Textos informativos exponen claramente todos los aspectos de la anatomia. Los sistemas y las funciones del cuerpo se describen por separado en apartados y capitulos codificados por colores. Redactado por expertos y asesores en medicina, el texto es claro, conciso y...