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"Complete with an introduction chronicling the stories of biologists and naturalists who have explored and defined the ecological areas of Texas over time, The Natural History of the Trans-Pecos explores the formation of the region more than 600 million years ago, the adaptability of its ecosystems, and the conservation efforts to keep these wildly diverse environments flourishing. Detailed descriptions, vivid anecdotes, and vibrant pictures of the features that make this region so unique emphasize the rugged grandeur of the Trans-Pecos"--

Natural history --- Big Bend Region (Tex.)

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Frontier and pioneer life --- Gunfighters --- Cowboys --- Ranchers --- Barnett, Graham, --- Big Bend Region (Tex.)

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Canyons --- Natural history --- Ranchers --- Ranchmen --- Stockmen (Animal industry) --- Farmers --- History, Natural --- Natural science --- Physiophilosophy --- Biology --- Science --- Cañons --- Valleys --- History. --- Pinto Canyon (Tex.) --- Big Bend Region (Tex.) --- Chinati Mountains (Tex.) --- Big Bend Country (Tex.)

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United States. --- History. --- Big Bend Region (Tex.) --- Mexico --- Big Bend Country (Tex.) --- Anáhuac --- Estados Unidos Mexicanos --- Maxico --- Méjico --- Mekishiko --- Meḳsiḳe --- Meksiko --- Meksyk --- Messico --- Mexique (Country) --- República Mexicana --- Stany Zjednoczone Meksyku --- United Mexican States --- United States of Mexico --- מקסיקו --- メキシコ --- History, Military --- History --- Cavalry operations.