00486cam a22001697a 4500 180718b1971 xxu||||| |||| 00| 0 eng d 11 750416 5 X93 Un3 U.K. Aircraft noise: Flight routeing near airports By U.K. London Her Majesty's Stationary Office 1971 36p The noise advisory council Airplanes -- Noise Airports --Traffic control Airport noise 411212 411212 0 0 0 0 IIPA IIPA 2009-01-28 X93 Un3 DA4265 2018-07-21 2018-07-21 DA