1. Water-quality assessment of the Rio Grande Valley, Colorado, New Mexico, and Texas : shallow ground-water quality of a land-use area in the San Luis Valley, south-central Colorado, 1993 Author/Creator: Anderholm, Scott K., author Publication/Creation: Albuquerque, New Mexico : U.S. Geological Survey, 1996 Format: Book Access & Availability: Loading
2. Quality of ground water in agricultural areas of the San Luis Valley, South-Central Colorado Author/Creator: Edelmann, Patrick, author Publication/Creation: Lakewood, Colorado : U.S. Geological Survey, 1984 Format: Book Access & Availability: Loading