TY - RPRT TI - Chemical data and lead isotopic compositions in stream-sediment samples from the Boulder River watershed, Jefferson County, Montana AU - David L. Fey AU - Dan M. Unruh AU - Stan E. Church PY - 1999 DO - 10.3133/ofr99575 UR - https://pubs.usgs.gov/publication/ofr99575 ID - ofr99575 ER -