TY - RPRT TI - Hydrologic and water-quality data related to the occurrence of arsenic for areas along the Madison and Upper Missouri Rivers, southwestern and west-central Montana AU - L.K. Tuck AU - D.M. Dutton AU - D. A. Nimick PY - 1997 DO - 10.3133/ofr97203 UR - https://pubs.usgs.gov/publication/ofr97203 ID - ofr97203 ER -