Diversión con DOBLES en la granja (DOUBLES Fun on the Farm)

Existen una serie de criaturas fantásticas que residen en la delgada línea que divide lo real de lo imaginario. Con este libro se puede aprender todo sobre los gnomos, las brujas, las sirenas, los elfos o los ángeles en textos increíbles e ilustraciones mágicas.

Why did the Civil War begin? Which states were part of the Union and which were part of the Confederacy? Readers will learn the answers to these questions and more as they move through this fascinating nonfiction Spanish-translated title. The easy-to-read informational text, engaging facts, and vivid images and illustrations help highlight some of the aspects that led up to the Civil War, including slavery, the Underground Railroad, abolitionists, the Fugitive Slave Act, the Dred Scott Decision, and the Lincoln-Douglas debates. The accessible table of contents works in conjunction with the...

Surveys the life of Swiss/German immigrant John Sutter, on whose land gold was discovered in the mid-nineteenth century, spurring the California gold rush and westward expansion.

Planck consideró como tarea científica suprema la búsqueda de las leyes que rigen el absoluto, el invariante oculto en la realidad externa. Le cupo el privilegio de descubrir uno de esos elementos universales: el quantum de acción, la constante h.