1. Relations among rainstorm runoff, streamflow, pH, and metal concentrations, Summitville Mine area, upper Alamosa River basin, southwest Colorado, 1995-97 Author/Creator: Rupert, Michael, 1959- author Publication/Creation: Denver, Colorado : U.S. Geological Survey, 2001 Resource Type: Book Access & Availability: Loading
2. Nitrate (NO₂+NO₃-N) in ground water of the Upper Snake River Basin, Idaho and western Wyoming, 1991-95 Author/Creator: Rupert, Michael, 1959- author Publication/Creation: Boise, Idaho : U.S. Geological Survey, 1997 Resource Type: Book Access & Availability: Loading