1. Aerial gamma-ray maps of regional surface concentrations of potassium, uranium, and thorium in West Virginia Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by U.S. Geological Survey, Information Services Resource Type: Map Access & Availability: Loading
2. Geophysical data grids for the conterminous United States Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, [1995] Resource Type: Book Access & Availability: Loading
3. Design and construction of a gamma-ray spectrometer system for determining natural radioelement concentrations in geological samples at the U.S. Geological Survey in Reston, Virginia Author/Creator: Snyder, Stephen L. Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2003 Resource Type: Book Access & Availability: Loading