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Report No. FAA-EQ.

United States. Federal Aviation Administration. Office of Environmental Quality

出版	U.S. Department of Transportation, Federal Aviation Administration, Office of Environmental Quality; Springfield, VA 22151, Available to the public through National Technical Information Service., 1978
URL	http://books.google.com.hk/books?id=gKDzWIEaxgcC&hl=&source=gbs_api