TY - RPRT TI - A statistical learning framework for groundwater nitrate models of the Central Valley, California, USA AU - Bernard T. Nolan AU - Michael N. Fienen AU - David L. Lorenz PY - 2015 DO - 10.1016/j.jhydrol.2015.10.025 UR - https://pubs.usgs.gov/publication/70157562 ID - 70157562 ER -