TY - RPRT TI - Use of radium isotopes to determine the age and origin of radioactive barite at oil-field production sites AU - R. A. Zielinski AU - J. K. Otton AU - J. R. Budahn PY - 2001 DO - 10.1016/s0269-7491(00)00188-3 UR - https://pubs.usgs.gov/publication/70023262 ID - 70023262 ER -