1. Delaware, District of Columbia, and Maryland Author/Creator: United States. Bureau of the Census. Geography Division Publication/Creation: Washington, D.C. : U.S. Dept. of Commerce, Bureau of the Census, [1983] Format: Map Access & Availability: Loading
2. Distribution and abundance of cadmium determined by spectrographic analysis in nonmagnetic fraction of heavy-mineral concerntrates from stream sediments, Petersburg area southeast Alaska Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Va.] : Department of the Interior, U.S. Geological Survey, 1983 Format: Map Access & Availability: Loading
3. Distribution of selected chemical constituents in water from the Floridan aquifer, Southwest Florida Water Management District Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Tallahassee, Fla.] : Department of the Interior, United States Geological Survey, 1983 Format: Map Access & Availability: Loading
4. Drainage basins in Duval County, Florida Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Tallahassee, Fla.] : Department of the Interior, United States Geological Survey, 1983 Format: Map Access & Availability: Loading