1. Identification of water-quality trends using sediment cores from Dillon Reservoir, Summit County, Colorado Publication/Creation: Denver, Colo. : U.S. Dept. of the Interior, U.S. Geological Survey, 2001 Resource Type: Book Access & Availability: Loading
2. Interaction of surface water and ground water in the Dutch Flats area, western Nebraska, 1995-99 Publication/Creation: Lincoln, Neb. : U.S. Dept. of the Interior, U.S. Geological Survey, 2001 Resource Type: Book Access & Availability: Loading