TY - RPRT TI - Estimating metal concentrations with regression analysis and water-quality surrogates at nine sites on the Animas and San Juan Rivers, Colorado, New Mexico, and Utah AU - M. Alisa Mast PY - 2018 DO - 10.3133/sir20185116 UR - https://pubs.usgs.gov/publication/sir20185116 ID - sir20185116 ER -