TY - HOUR T1 - Air carrier industry scheduled service traffic statistics DA - 1981- CY - Washington, D.C. : CN - TD 12.15: PB - U.S. Dept. of Transportation, PP - Washington, D.C. : PY - 1981- N1 - Title from cover. N1 - Imprint varies: Cambridge, MA, <3rd quarter and 12 months ended Sept. 1984 and 1985>-198 ; Washington, DC, <4th quarter and 12 months ended Dec. 1987 and 1988-> ID - 198134 KW - Aeronautics, Commercial TI - Air carrier industry scheduled service traffic statistics ER -