 Geography of California California United States Hetch Hetchy Project Gifford Pinchot Conservation movement Hetch Hetchy Pinchot John Muir Sierra Club Yosemite National Park William Mulholland | |  Lecture #14: The Conservation Vision Suggested Readings: Samuel Hays, Conservation and The Gospel of EfficiencyRoderick Nash, Wilderness and the American Mind, 4th edChar Miller, Gifford Pinchot and the
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