Pennsylvania, 2000. 2000 census of population and housing.

[Washington, D.C.] : U.S. Dept. of Commerce, Economics and Statistics Administration, U.S. Census Bureau : For sale by Supt. of Docs., U.S. G.P.O., 2003

Pennsylvania, 2000.

[Washington, D.C.] : U.S. Dept. of Commerce, Economics and Statistics Administration, U.S. Census Bureau : For sale by Supt. of Docs., U.S. G.P.O., 2003