U.S. Geological Survey ground-water studies in ColoradoJohn B. Weeks · First published 1988Open the Tome
Regional Aquifer-System Analysis Program of the U.S. Geological SurveyJohn B. Weeks · First published 1987Open the Tome
Digital model of ground-water flow in the Piceance basin, Rio Blanco and Garfield Counties, ColoradoJohn B. Weeks · First published 1978Open the Tome
