TY - RPRT TI - Strontium isotope detection of brine contamination in the East Poplar oil field, Montana AU - Zell E. Peterman AU - Joanna N. Thamke AU - Kiyoto Futa AU - Thomas A. Oliver PY - 2010 DO - 10.3133/ofr20101326 UR - https://pubs.usgs.gov/publication/ofr20101326 ID - ofr20101326 ER -