作者: Gifford Pinchot
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摘要: This bulletin about the conservation of natural resources was originally an address delivered by forester Gifford Pinchot to National Geographic Society, in Washington D. C. on January 31, 1908. The advocates for greater efforts at providing a broad overview state America's with regard forests, minerals, oil, gas, and soil. failure plan responsibly regulate industry has led monopolistic practices which currently endanger United States' resources. country's national calls increased conservation.