La vida amorosa de los animales

Con La musculación racional el lector será capaz de planificar un entrenamiento de fuerza adecuado y seguro. El libro, que se divide en dos partes, introduce en la primera los conceptos clave para el entrenamiento de la fuerza y en la segunda se desarrolla, paso a paso, la puesta en práctica del entrenamiento con series de ejercicios para los niveles de iniciación, intermedio y avanzado. También se trata el entrenamiento de contra resistencia en niños, adolescentes, mujeres y personas mayores. Esta obra es la recopilación de los conocimientos teóricos que se han utilizado a lo largo...

Young readers will discover amazing facts about birds' nest-building habits and other information with this new guide featuring Internet links to each of the book's topics.

Illustrations and text present the history, geography, people, politics and government, economy, and social life and customs of Arizona, the Grand Canyon State.

What do solar panels, waterproof clothing, and window coverings have in common? They are technologies that have been adapted based on studying butterflies! Learn what scientists have learned from butterflies with this Spanish book that will ignite a curiosity about STEAM topics through real-world examples. Created in collaboration with the Smithsonian Institution, this STEAM book features a hands-on STEAM challenge that is perfect for makerspaces and that guides students step-by-step through the engineering design process. Make STEAM career connections with career advice from actual...