TY - RPRT TI - Isotopic analysis of radium geochemistry at discrete intervals in the Midwestern Cambrian-Ordovician aquifer system AU - Madeleine J Mathews AU - Sean R Scott AU - Madeline B Gotkowitz AU - Randall J. Hunt AU - Matthew Ginder-Vogel PY - 2022 DO - 10.1016/j.apgeochem.2022.105300 UR - https://pubs.usgs.gov/publication/70231918 ID - 70231918 ER -