TY - RPRT TI - Occurrence and geochemistry of radium in water from principal drinking-water aquifer systems of the United States AU - Z. Szabo AU - Vincent T. DePaul AU - J.M. Fischer AU - T. F. Kraemer AU - E. Jacobsen PY - 2012 DO - 10.1016/j.apgeochem.2011.11.002 UR - https://pubs.usgs.gov/publication/70032665 ID - 70032665 ER -