1. Concentration and trend of 1,4-dioxane in wells sampled during 2002-2017 in the vicinity of the Tucson International Airport Area Superfund Site, Arizona Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 2017 Format: Map Access & Availability: Loading
2. Congressional districts of the 109th Congress of the United States, January 2005-2007 Author/Creator: U.S. Census Bureau. Geography Division Publication/Creation: [Washington, D.C.] : U.S. Dept. of Commerce, Bureau of the Census, [2005] Format: Map Access & Availability: Loading