Julio Gálvez y la piedra de Huamanga

La teoría de conjuntos es una rama de las matemáticas, y cuya dedicación de este capítulo, es gracias al matemático, Ferdinand Ludwing Philipp Cantor, quien es considerado el padre de la Teoría de Conjuntos, debido a ello, es que, en el año 1874, salió su primer trabajo revolucionario, con respecto a la teoría de conjuntos.

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.

Frente al espejo es una conversación íntima entre amigos. Una confesión con el ánimo de agradecer a la vida. Un repaso en un momento crucial. Un poner por escrito lo que nunca se ha dicho. Una forma de sincerarse frente al espejo.

People today refer to the Midwestern and prairie states as flyover country. During the Civil War, crossing those areas was the biggest obstacle in uniting the East and West Coasts of our divided nation. An act of Congress in 1862 authorized the Central Pacific and the Union Pacific railroad companies to build a railroad that would link the coasts. Seven years later, on May 10, 1869, an overwhelmingly immigrant labor force completed the task when a rail line was join in Promontory, Utah. The states had become united at last.