La situacion de Puerto-Rico

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...

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...

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...

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...

Aunque hay muchos documentos históricos, anecdóticos o científicos, hasta ahora no hay ninguno que recopile de manera cronológica y más o menos exhaustiva la historia de la colonización del Vaupés, selva que forma parte de la amazonia colombiana. Este libro es una crónica y una historia panorámica y sintética, útil para los que estudian las ciencias sociales, para los actuales habitantes del departamento del Vaupés y, en particular, para los indígenas de la zona de los ríos Yapú y Papurí.

Tiempo transcurrido es una crónica de por 18 años de vida mexicana. El libro empieza con un momento clave de la historia mexicana reciente, el movimiento estudiantil del 68, y se detiene antes de que suceda el terremoto de 1985. Juan Villoro retrata una época con innegable fidelidad al mismo tiempo que crea situaciones ficticias.

Los Sistemas de Información Geográfica (SIG) y las tecnologías espaciales están jugando un papel clave en la interpretación arqueológica. En este sentido, esta investigación explora el uso de SIG en torno al estudio de la configuración de paisaje de la tradición Teuchitlán, una de las sociedades complejas más tempranas en el Occidente de México (400 a.C-450 d.C), su ritmo social a escala regional permitió la proliferación de asentamientos con elementos distintivos como el estilo arquitectónico caracterizado por estructuras circulares, la explotación de yacimientos de obsidiana ...

Desde hace dos siglos estamos viviendo una fase extraordinariamente singular de esta historia, tan fundamental para comprender las evoluciones pasadas y para formular hipotesis sobre el futuro que es objeto de una verdadera teoria: la transicion demografica. Aunque la necesidad de medir obligue a simplificar la realidad, no debemos olvidar la complejidad. No hay una poblacion, sino poblaciones, cada una con su propia dinamica demografica. El universo de La demografia tiene multiples dimensiones y hay que tener en cuenta las diferencias, constatarlas y buscar las causas. Si las cosas cambian y ...