[Washington, D.C.] : U.S. Department of Transportation, Bureau of Transportation Statistics : U.S. Department of Commerce, Economics and Statistics Administration, U.S. Census Bureau, 1999-
[Washington, D.C.] : U.S. Department of Transportation, Bureau of Transportation Statistics : U.S. Department of Commerce, Economics and Statistics Administration, U.S. Census Bureau, 1999-
[Washington, D.C.] : U.S. Dept. of Transportation, Bureau of Transportation Statistics : U.S. Dept. of Commerce, Economics and Statistics Administration, Bureau of the Census, [1996]
[Washington, D.C.] : U.S. Department of Transportation, Bureau of Transportation Statistics : U.S. Department of Commerce, Economics and Statistics Administration, Bureau of the Census, -1996
[Washington, D.C.] : U.S. Dept. of Transportation, Bureau of Transportation Statistics : U.S. Dept. of Commerce, Economics and Statistics Administration, Bureau of the Census, [1996]
[Washington, D.C.] : U.S. Dept. of Transportation, Bureau of Transportation Statistics : U.S. Dept. of Commerce, Economics and Statistics Administration, Bureau of the Census, [1996]