Al-Ghazal y la embajada hispano-musulmana a los vikingos en el siglo IX

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...

¿Quién no se ha preguntado alguna vez cómo surgió y se desarrolló la vida en la Tierra? Tenemos bien aprendida, sí, la lección darwiniana de la evolución de las especies, pero ese es un guión demasiado amplio y general para una historia en la que importa, y mucho, la trama del detalle, y en la que es imprescindible tomar en cuenta también cómo fue variando nuestro planeta y su atmósfera. Pues bien, esa trama biológico-geológica es la que se describe en La vida en un joven planeta, del paleontólogo y catedrático de la Universidad de Harvard, Andrew Knoll. Integrando en un...

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...

El autor centra su inter s en la relaci n entre la estructura de clase y el sistema pol tico, en particular las facciones, los partidos y los grupos corporativos e ideol gicos que se disputaban el poder y que formaron las alianzas m s complejas y desconcertantes en el M xico del siglo XIX.