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 Environment of the United States United States Natural environment Sierra Club Protected areas of the United States Colorado River Storage Project Wilderness David Brower Robert Sterling Yard Howard Zahniser National Park Service Yellowstone National Park |
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Lecture #18-19: Parks, Wilderness, and the Land Ethic Suggested Readings: Roderick Nash, Wilderness and the American Mind, 4th edAlfred Runte, National Parks, 4th ed., 2010; Ken Burns & Dayton Duncan, The Nation