TY - RPRT TI - Extreme fractionation of 234U 238U and 230Th 234U in spring waters, sediments, and fossils at the Pomme de Terre Valley, southwestern Missouri AU - Barney J. Szabo PY - 1982 DO - 10.1016/0016-7037(82)90323-4 UR - https://pubs.usgs.gov/publication/70011793 ID - 70011793 ER -