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Umweltschutz
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keywords:(Umweltschutz)
Noise Exposure Forecast Contours For 1967, 1970 And 1975 Operations at Selected Airports
Developing Noise Exposure Contours for General Aviation Airports
Calculation of Day-Night Levels (Ldn) Resulting from Civil Aircraft Operations
Sound Exposure Level versus Distance Curves for Civil Aircraft
Noise Exposure Forecast Contours for Aircraft Noise Tradeoff Studies at Three Major Airports
Effective Perceived Noise Level Versus Distance Curves for Civil Aircraft