1. Selected papers in the hydrologic sciences, 1987 Publication/Creation: [Washington, D.C.] : U.S. Geological Survey, [1987] Format: Book Access & Availability: Loading
2. Selected reports that include computer programs produced by the U.S. Geological Survey for simulation of ground-water flow and quality Author/Creator: Appel, Charles A., author Publication/Creation: [Reston, Virginia] : U.S. Geological Survey, 1988 Format: Book Access & Availability: Loading
3. Simulating transport of volatile organic compounds in the unsaturated zone using the computer model R-UNSAT Author/Creator: Lahvis, Matthew A. (Matthew Arthur) Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, [1998] Format: Book Access & Availability: Loading
4. Submarine ground-water discharge : nutrient loading and nitrogen transformations Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, [2007] Format: Book Access & Availability: Loading