Washington, DC : U.S. Dept. of Commerce, Economic and Statistics Administration, Bureau of the Census : For sale by the Supt. of Docs., U.S. G.P.O., [1999]
Washington, DC : U.S. Dept. of Commerce, Economic and Statistics Administration, Bureau of the Census : For sale by the Supt. of Docs., U.S. G.P.O., [1998]