TY - RPRT TI - An empirical NaKCa geothermometer for natural waters AU - R.O. Fournier AU - A.H. Truesdell PY - 1973 DO - 10.1016/0016-7037(73)90060-4 UR - https://pubs.usgs.gov/publication/70010280 ID - 70010280 ER -