TY - RPRT TI - Uranium disequilibrium in groundwater: An isotope dilution approach in hydrologic investigations AU - J.K. Osmond AU - H.S. Rydell AU - M. I. Kaufman PY - 1968 DO - 10.1126/science.162.3857.997 UR - https://pubs.usgs.gov/publication/70011485 ID - 70011485 ER -