1. The occurrence of volatile organic compounds in aquifers of the United States Author/Creator: Lapham, Wayne W. Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, [2006] Resource Type: Map Access & Availability: Loading
2. Volatile organic compounds in samples from domestic and public wells, 1985-2002 Author/Creator: Rowe, Barbara L. Publication/Creation: [Reston, Va.?] : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, CO : Information Services [distributor], 2006 Resource Type: Map Access & Availability: Loading
3. Nitrate in ground water : using a model to simulate the probability of nitrate contamination of shallow ground water in the conterminous United States Author/Creator: Hitt, Kerie J. Publication/Creation: Reston, Va. : USGS National Water-Quality Assessment Program, 2005 Resource Type: Map Access & Availability: Loading