TY - RPRT TI - Flow of river water into a Karstic limestone aquifer. 1. Tracing the young fraction in groundwater mixtures in the Upper Floridan Aquifer near Valdosta, Georgia AU - Niel Plummer AU - E. Busenberg AU - J. B. McConnell AU - S. Drenkard AU - P. Schlosser AU - R. L. Michel PY - 1998 DO - 10.1016/s0883-2927(98)00031-6 UR - https://pubs.usgs.gov/publication/70020487 ID - 70020487 ER -