El secreto de Copérnico

American military aviation reached a low point after World War I, lagging behind its European counterparts and facing a peacetime battle for survival. To raise the public profile of aviation, military leaders encouraged their pilots to enter air shows and vie for speed, endurance, and altitude records. As a result, U.S. Army airmen daringly accomplished the first flight around the world in 1924, three years before Charles Lindbergh's famous solo flight. In Around the World in 175 Days, Carroll V. Glines recounts this adventure from the golden age of aviation. After two years of planning, four ...

Desde la prehistoria de Sevilla hasta la ciudad cristiana y visigoda, se estudian con rigor científico los orígenes y el devenir de una trayectoria histórica que llega hasta la ocupación musulmana de la ciudad; todo ello sin perder el tono divulgativo y la riqueza expresiva del autor, figura señera de la Arqueología.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute...

Excerpt from Cronica Catalana de Ramon Muntaner: Texto Original y Traduccion Castellana, Acompanada de Numerosas Notas Aun cuando la potencia conocida por Corona de Aragon llevaba el titulo de una antigua soberania o reino, en cuyo territorio se hablaba el castellano, y habia estado unido, en otro tiempo, con la monarquia de Castilla; cn todo, la tal Crona debia llamarse asi por haberse constituido con la unin de aquel antiguo reino y el condad de Barcelona; de modo que la potencia federativa formada por un condado y un reino no podia tomar el primero de ests titulos sin rebajar el segundo ni ...