APA (7th ed.) Citation
ebrary, Inc. (1993). Protecting visibility in national parks and wilderness areas. National Academy Press.
Chicago Style (17th ed.) Citation
ebrary, Inc. Protecting Visibility in National Parks and Wilderness Areas. Washington, D.C.: National Academy Press, 1993.
MLA (9th ed.) Citation
ebrary, Inc. Protecting Visibility in National Parks and Wilderness Areas. National Academy Press, 1993.
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