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The Collected Works of Sigurd F. Olson
註釋Siguard F. Olson was more than a spokesman for the preservation of wilderness, he was a statesman in the environmental wars. Through his work with the Quetico-Superior Council, the Izaak Walton League, the Wilderness Society, and the National Park Association, he was instrumental in creating and preserving the Quetico-Superior wilderness areas of northern Minnesota and Canada. --