1. Preliminary lithogeochemical map showing near-surface rock types in the Chesapeake Bay Watershed, Virginia and Maryland Author/Creator: Geological Survey (U.S.) Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2001 Resource Type: Map Edition: Version 1.0. Access & Availability: Loading
2. Preliminary lithogeochemical map showing near-surface rock types in the Chesapeake Bay Watershed, Virginia and Maryland Author/Creator: Peper, John D. Publication/Creation: Reston, Va. : U.S. Dept of the Interior, U.S. Geological Survey, 2001 Resource Type: Map Edition: Version 1.0. Access & Availability: Loading