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The recent increase in the search for coal has initiated a dramatic growth in sedimentological research on the origin, formation and environment of coal deposition. This publication is concerned with perhaps the most important field of coal research, that of coal environments. This subject involves many interrelated disciplines, including the sedimentology, petrology, geochemistry, palaeobotany and palaeogeography of coal deposits. In the past, workers in these fields have operated independently, and only recently have their research efforts been integrated to provide a more comprehensive understanding of coal depositional environments.
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Laredo is a city at the crossroads of North American history. Founded by the Spanish in 1755, it has stood at the intersection of regional commerce since its earliest days. Now, John A. Adams, Jr. provides the first-ever panoramic business and economic history of Laredo. He traces the evolution of the region from its early days as a ranching center into the mid-twentieth century, when Laredo had become what it remains today: a booming port of trade and a principal center of commerce and financial services on the southern border of the United States. In Commerce and Conflict on the Rio Grande Adams demonstrates how the increasingly diversified economy of the region fed the fortunes of the city. His narrative, buttressed throughout by tables and statistics, paints a vivid mural of both the economic forces and the farsighted and ambitious individuals that combined to bring prosperity to this unique American city. Readers will find a wealth of insights into regional economics, history, and borderlands themes.