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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, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
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, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Demonstrates the way in which the discovery, application, and adaptation of materials has shaped the course of human history and the routines of our daily existence.
When the young Swedish-descended Alexandra Bergson inherits her father's farm in Nebraska, she must transform the land from a wind-swept prairie landscape into a thriving enterprise. She dedicates herself completely to the land—at the cost of great sacrifices. O Pioneers! [1913] is Willa Cather's great masterpiece about American pioneers, where the land is as important a character as the people who cultivate it. WILLA CATHER [1873-1947] was an American author. After studying at the University of Nebraska, she worked as a teacher and journalist. Cather's novels often focus on settlers in the USA with a particular emphasis on female pioneers. In 1923, she was awarded the Pulitzer Prize for the novel One of Ours, and in 1943, she was elected to the American Academy of Arts and Sciences.
This is a review of 190 years of literature on copper and its alloys. It integrates information on pigments, corrosion and minerals, and discusses environmental conditions, conservation methods, ancient and historical technologies.
This book explains how and where copper and fossil fuels were formed and the likely future for the extraction of copper and coal. The colourful chronology of our efforts to extract metals from minerals and energy from fossil fuels is presented from earliest times until the present day. The difficult concept of human sustainability is examined in the context of continually decreasing real prices of energy and metals. This book integrates the latest findings on our historic use of technology to continually produce cheaper metals even though ore grades have been decreasing. Furthermore, it shows that the rate of technological improvement must increase if metals are to be produced even more cheaply in the future.