TY - RPRT TI - Evaluation of the Source and Transport of High Nitrate Concentrations in Ground Water, Warren Subbasin, California AU - Tracy Nishikawa AU - Jill N. Densmore AU - Peter Martin AU - Jonathan C. Matti PY - 2018 DO - 10.3133/wri034009 UR - https://pubs.usgs.gov/publication/wri034009 ID - wri034009 ER -