United States. Committee on Improving the Science and Technology Programs of the National Park Service & ebrary, Inc. (1992). Science and the national parks. National Academy Press.
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Citazione stile Chigago Style (17a edizione)
United States. Committee on Improving the Science and Technology Programs of the National Park Service e Inc ebrary. Science and the National Parks. Washington, D.C.: National Academy Press, 1992.
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Citatione MLA (9a ed.)
United States. Committee on Improving the Science and Technology Programs of the National Park Service e Inc ebrary. Science and the National Parks. National Academy Press, 1992.
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Attenzione: Queste citazioni potrebbero non essere precise al 100%.