TY - RPRT TI - Impact of the Summitville Mine on irrigation water, agricultural soils, and alfalfa in the southwestern San Luis Valley, Colorado AU - J. A. Erdman AU - K. S. Smith PY - 1993 DO - 10.3133/ofr93616 UR - https://pubs.usgs.gov/publication/ofr93616 ID - ofr93616 ER -