1. Variations in land use and nonpoint-source contamination on the Fort Berthold Indian Reservation, west-central North Dakota, 1990-93 Author/Creator: Macek-Rowland, Kathleen, author Publication/Creation: Bismarck, North Dakota : U.S. Geological Survey, 1996 Format: Book Access & Availability: Loading
2. Vertical gradients in water chemistry in the central High Plains aquifer, southwestern Kansas and Oklahoma panhandle, 1999 Author/Creator: McMahon, Peter B., author Publication/Creation: Denver, Colorado : U.S. Geological Survey, 2001 Format: Book Access & Availability: Loading
3. Vulnerability of ground water in the Tokio and Warwick aquifers to surface contamination, Fort Totten Indian Reservation, North Dakota Author/Creator: Reed, Thomas B., author Publication/Creation: Bismarck, North Dakota : U.S. Departmrnt of the Interior, U.S. Geological Survey, 1999 Format: Book Access & Availability: Loading
4. Vulnerability of ground water to atrazine leaching in Kent County, Michigan Author/Creator: Holtschlag, David J., author Publication/Creation: Lansing, Michigan : U.S. Geological Survey, 1997 Format: Book Access & Availability: Loading
5. Vulnerability of ground water to contamination, Edwards aquifer recharge zone, Bexar County, Texas, 1998 Author/Creator: Clark, Allan K., author Publication/Creation: Austin, Texas : U.S. Deptartment of the Interior, U.S. Geological Survey, 2000 Format: Book Access & Availability: Loading
6. Vulnerability of ground water to contamination, northern Bexar County, Texas Author/Creator: Clark, Amy R. 1961- (Amy Richter) Publication/Creation: Austin, Tex. : U.S. Dept. of the Interior, U.S. Geological Survey, 2003 Format: Book Access & Availability: Loading
7. Vulnerability of ground water to contamination, northern Bexar County, Texas Author/Creator: Clark, Amy R. 1961- (Amy Richter) Publication/Creation: Denver, CO : U.S. Geological Survey, Information Services [distributor]. Format: Book Access & Availability: Loading