1. Nitrate-nitrogen concentrations in shallow ground water of the coastal plain of the Albemarle-Pamlico Drainage Study Unit, North Carolina and Virginia Author/Creator: Spruill, T. B. Publication/Creation: [Reston, Va?] : U.S. Geological Survey, [1997] Format: Book Access & Availability: Loading
2. Radon in ground water in Guilford County, North Carolina Author/Creator: Spruill, T. B. Publication/Creation: [Raleigh, N.C.] : U.S. Dept. of the Interior, U.S. Geological Survey, [1997] Format: Book Access & Availability: Loading
3. Assessment of water resources in lead-zinc mined areas in Cherokee County, Kansas, and adjacent areas Author/Creator: Spruill, T. B. Publication/Creation: Denver, Colo. : For sale by the Books and Open-File Reports Section, U.S. Geological Survey Format: Book Access & Availability: Loading