TY - RPRT TI - Use of long-term tritium records from the Colorado River to determine timescales for hydrologic processes associated with irrigation in the Imperial Valley, California AU - Robert L. Michel AU - R.A. Schoeder PY - 1994 DO - 10.1016/0883-2927(94)90061-2 UR - https://pubs.usgs.gov/publication/70017514 ID - 70017514 ER -